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Hitachi VSP F1500, User Manual

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Workflow for the COW method

The following workflow describes the COW method and how a VSP G series or
VSP F series storage system stores snapshot data:

1.

The host writes data to a P-VOL.

2.

The storage system stores snapshot data for the P-VOL.

3.

The storage system returns the write completion status to the host.

The following figure illustrates the COW method.
 

 

36

Overview of Thin Image

Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series

Summary of Contents for VSP F1500

Page 1: ...er Guide Hitachi Virtual Storage Platform G1000 and G1500 Hitachi Virtual Storage Platform F1500 Hitachi Virtual Storage Platform G200 G400 G600 G800 Hitachi Virtual Storage Platform F400 F600 F800 MK 92RD8011 12 June 2017 ...

Page 2: ...laws or otherwise from authorized employees and other individuals to access relevant data and 2 Verifying that data continues to be held retrieved deleted or otherwise processed in accordance with relevant laws Notice on Export Controls The technical data and technology inherent in this Document may be subject to U S export control laws including the U S Export Administration Act and its associate...

Page 3: ...nd snapshot groups 20 Snapshot Clones 21 Snapshot trees and cascaded pairs 22 Creating cascaded pairs 22 VSP family software applications for Thin Image 25 How Thin Image works 26 How Thin Image uses pools and pool volumes 26 Usage level rebalancing among parity groups 27 How Thin Image uses V VOLs 28 How Thin Image pairs are created 29 Using snapshot pairs not cascaded 29 Using cascaded pairs 30 ...

Page 4: ...lumes with Resource Partition Manager 63 System option modes for Thin Image 63 Acronyms and abbreviations for VSP family storage system software applications used in this guide 66 2 Thin Image system and planning requirements 67 Thin Image system requirements 68 Installing Thin Image 68 Uninstalling Thin Image 68 Thin Image licensed capacity requirements 68 Thin Image shared memory requirements 69...

Page 5: ...vice Manager Storage Navigator 129 Creating Thin Image pairs using Device Manager Storage Navigator 130 Selecting a pool as your primary volume 133 Example of creating complex Thin Image pairs 133 Creating Thin Image pairs and defining them in snapshot or consistency groups using CCI 134 Workflow for defining Thin Image pairs and defining them in snapshot or consistency groups using Device Manager...

Page 6: ...rmation 170 Viewing used pool capacity VSP G1000 G1500 and VSP F1500 172 Viewing used capacity by pool 172 Viewing used capacity of the physical capacity by pool 172 Viewing used pool capacity by Thin Image pair s root volume 172 Viewing formatted pool capacity and pool usage rates 173 Increasing pool capacity 173 Failure of available pool capacity formatting and pool capacity increase 177 Decreas...

Page 7: ... Troubleshooting with Command Control Interface 213 Command Control Interface SSB2 codes 214 Notes on using Thin Image primary volumes as TrueCopy ShadowImage or Universal Replicator pair volumes 222 Notes on storing snapshot data and on cloning pairs 223 B Thin Image GUI windows and wizards 225 Replication window 226 Local Replication window 228 View Pair Synchronization Rate window 239 View Pair...

Page 8: ...8 Assign Secondary Volumes window 289 Assign Secondary Volumes confirmation window 293 Remove Secondary Volumes window 296 Glossary 299 Index 321 8 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 9: ...y to understand how to use this product and maintain a copy for reference purposes Intended audience Product version Release notes Changes in this revision Related documents Document conventions Conventions for storage capacity values Accessing product documentation Getting help Comments Preface 9 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 10: ...ersion This document revision applies to the following microcode or firmware VSP G1000 G1500 and VSP F1500 microcode 80 05 4x or later VSP G200 G400 G600 G800 VSP F400 F600 F800 firmware 83 04 4x or later SVOS 7 2 or later Release notes Read the release notes before installing and using this product They may contain requirements or restrictions that are not fully described in this document or upda...

Page 11: ...ioning Guide for Open Systems MK 92RD8014 Hitachi SNMP Agent User Guide MK 92RD8015 System Administrator Guide MK 92RD8016 Hitachi TrueCopy for Mainframe User Guide MK 92RD8018 Hitachi TrueCopy User Guide MK 92RD8019 Hitachi ShadowImage for Mainframe User Guide MK 92RD8020 Hitachi ShadowImage User Guide MK 92RD8021 Hitachi Universal Replicator for Mainframe User Guide MK 92RD8022 Hitachi Universal...

Page 12: ...emphasized words in text Indicates a variable which is a placeholder for actual text provided by the user or for output by the system Example pairdisplay g group For exceptions to this convention for variables see the entry for angle brackets Monospace Indicates text that is displayed on screen or entered by the user Example pairdisplay g oradb angle brackets Indicates variables in the following s...

Page 13: ...ollowing values Physical capacity unit Value 1 kilobyte KB 1 000 10 3 bytes 1 megabyte MB 1 000 KB or 1 0002 bytes 1 gigabyte GB 1 000 MB or 1 0003 bytes 1 terabyte TB 1 000 GB or 1 0004 bytes 1 petabyte PB 1 000 TB or 1 0005 bytes 1 exabyte EB 1 000 PB or 1 0006 bytes Logical capacity values for example logical device capacity cache memory capacity are calculated based on the following values Log...

Page 14: ...ontact information https support hds com en_us contact us html Hitachi Data Systems Community is a global online community for HDS customers partners independent software vendors employees and prospects It is the destination to get answers discover insights and make connections Join the conversation today Go to community hds com register and complete your profile Comments Please send us your comme...

Page 15: ... can expect a higher performance than by just storing the differential data About Thin Image Components of Thin Image How Thin Image works How Thin Image pair status changes Copy threshold option and host server I O performance for Thin Image Sharing Thin Image volumes with other software applications System option modes for Thin Image Acronyms and abbreviations for VSP family storage system softw...

Page 16: ...e pair the status changes to PAIR and snapshot data is stored You can use Thin Image to store a maximum of 1 024 snapshots of data including the number of clones when you clone a volume Updating the P VOL first copies the differential data as snapshot data in pool volumes pool VOL and then updates the data Snapshot data is a copy of differential data in Thin Image P VOLs If your storage system exp...

Page 17: ...shot pairs The pair is in PAIR status 2 The host updates the primary volume 3 Split the snapshot pairs The snapshot data of the primary volume is stored Snapshot data A in the figure below 4 The host updates the primary volume again 5 Split the snapshot pairs The updated data in the primary volume is stored as snapshot data Snapshot data B in the following figure In the event of data corruption yo...

Page 18: ... groups Snapshot groups Software applications for VSP family storage systems Hitachi Thin Image Dynamic Provisioning HDP Command Control Interface CCI You can run CCI commands to perform Thin Image tasks see Pair tasks using CCI or Device Manager Storage Navigator on page 212 Thin Image pairs This table describes Thin Image pairs Type Volume that can be used as P VOL Volume that can be used as S V...

Page 19: ...cal volume LDEV Logical volume of a P VOL contains DP VOLs V VOLs of which provisioning type is Dynamic Provisioning Secondary Thin Image V VOL V VOL of which provisioning type is Snapshot Use this volume to create snapshot pairs Cannot be used for cascaded or cloned pairs This volume is required to create a pair with the S VOL specified DP VOL Use this volume to create cascaded or cloned pairs Th...

Page 20: ...ll pairs within the group A consistency group can include Thin Image HTI ShadowImage SI and ShadowImage for Mainframe SIz pairs Use consistency groups to split the Thin Image pairs that are defined in the group Splitting the pairs using the group assures data consistency at the time the VSP family storage system receives the request A snapshot group is a group of only Thin Image pairs Use consiste...

Page 21: ...ng groups and storing snapshot data using CCI on page 33 Related tasks Creating Thin Image pairs and defining them in snapshot or consistency groups using CCI on page 134 Removing Thin Image snapshot groups on page 148 Related references Pair tasks using CCI or Device Manager Storage Navigator on page 212 Snapshot Clones When distributing data in a storage system you can use clones to improve effi...

Page 22: ...if you store them can be created by using Thin Image Cloning pairs includes operations after the P VOL is copied to the S VOL until volumes are unpaired Volumes created by cloning are not included Snapshot trees and cascaded pairs Snapshot trees are Thin Image pair configurations where snapshot data is stored The volume in the top layer of the snapshot tree is the root volume Volumes in the bottom...

Page 23: ... in the top layer of the snapshot tree P VOL of the L1 pair is the root volume Volumes between the root and leaf volumes are node volumes Volumes in the bottom layer of the snapshot tree are leaf volumes To create a Thin Image pair that can be used in a cascaded snapshot tree open the Create TI Pairs window and select Enable for Cascade For details Overview of Thin Image 23 Hitachi Thin Image User...

Page 24: ...ated remove the pair first and then create another Thin Image pair whose secondary volume is a DP VOL A snapshot tree can be configured by combining snapshot and cloned pairs As shown in the following figure you can also cascade pairs that are being cloned but you can only clone up to three pairs concurrently The following figure shows an example of when pairs that are being cloned are also cascad...

Page 25: ...the root volume and a node or leaf volume VSP family software applications for Thin Image A Thin Image installation typically includes the Thin Image software Dynamic Provisioning software and CCI Overview of Thin Image 25 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 26: ...te The configuration definition file for CCI is a group that is not a consistency group If you create a new pair and define the pairs in a consistency group for a group you defined using the configuration definition file for CCI and the pair is already defined in a consistency group the pair is defined in the same consistency group even if you try to create a new pair and assign it to a different ...

Page 27: ...e Thin Image pair is suspended PSUE status snapshot data is not stored and you cannot create additional Thin Image pairs Related tasks Creating Thin Image data pools on page 101 Increasing pool capacity on page 173 Decreasing pool capacity on page 177 Deleting pools on page 187 Restoring suspended Thin Image pairs on page 143 Usage level rebalancing among parity groups If multiple parity groups th...

Page 28: ...at do not have any physical storage space Thin Image uses V VOLs V VOLs of provisioning type Snapshot or DP VOL as V VOLs Thin Image V VOLs and DP VOLs are referred to as virtual volumes V VOLs in this document Use DP VOLs to create cascaded or cloned pairs Use Thin Image V VOLs to create snapshot pairs Note that you can use DP VOLs to cascade snapshot pairs Thin Image uses V VOLs to access snapsh...

Page 29: ...ediately after a volume becomes SMPL you cannot use the volume to create a Thin Image pair If you want to create Thin Image pairs using SMPL volumes you should wait for a while before creating the pairs The wait time required depends on your system environment Related tasks Creating Thin Image pairs using Device Manager Storage Navigator on page 130 Viewing pair properties on page 160 Using snapsh...

Page 30: ...me number of leaf volumes as the number of users to whom you want to distribute data This allows you to distribute data in the P VOL without increasing loads to the P VOL 30 Overview of Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 31: ...Distributing updated data in the P VOL to specified users Overview of Thin Image 31 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 32: ... the updated data and users to whom you do not want to distribute the updated data to separate node volumes 2 Delete the pairs in the node volume where you assigned users you do not want to distribute the updated data to S VOL 1 in the figure 3 Update the P VOL Creating a new distributor with cloned pairs 32 Overview of Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform ...

Page 33: ... creating groups and storing snapshot data using CCI You can use CCI raidcom commands to create a consistency or snapshot group and to split pairs to store the snapshot data for the group With Thin Image ShadowImage and ShadowImage for Mainframe you can create up to 2 048 consistency groups in a VSP family storage system The following figure illustrates how snapshot data is stored for a consistenc...

Page 34: ... data for a group To do this using CCI run the following raidcom command raidcom modify snapshot snapshot_data create 2 The host issues a write request to each P VOL in the group Snapshot data for the volumes are stored 34 Overview of Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 35: ...0 or higher when writing in cascaded pairs random access mode or 30 or higher when writing in sequential access mode the Copy On Write COW method is used In the CAW method writing the P VOL snapshot data changes the status to write completion In the COW method storing the P VOL snapshot data changes the status to write completion The CAW method wait time is shorter than that of the COW method Work...

Page 36: ...s snapshot data 1 The host writes data to a P VOL 2 The storage system stores snapshot data for the P VOL 3 The storage system returns the write completion status to the host The following figure illustrates the COW method 36 Overview of Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 37: ...100 The amount of pool capacity a pair is using The number of pairs being operated concurrently The pair synchronization rate shows the rate that S VOL data matches that of the next generation of the S VOL If the S VOL is the latest one the synchronization rate is computed by comparing the S VOL with the P VOL For the Thin Image pair where the cascade attribute is enabled the information displayed...

Page 38: ...ming if you create a pair immediately after deleting the last snapshot data for the primary volume If the pool threshold is exceeded when the Thin Image pair is in PAIR status the pair status changes to PFUL Thin Image pairs cannot be created when the pool threshold warning threshold when snapshot data is stored in a DP pool is exceeded 3 Snapshot data is stored when you split a pair in PAIR statu...

Page 39: ...tored in the DP pool the timing of changing to PSUE is determined by the setting in Suspend TI pairs when the deletion threshold is exceeded For details see the Provisioning Guide for your storage system Thin Image host access and pair status The status of Thin Image HTI pairs depends on whether the hosts can read from or write to the Thin Image pair P VOL or S VOLs The following table explains th...

Page 40: ...changes to COPY at first and then to PAIR after the pair creation finishes 3 You split a pair When you split a pair in the PAIR status the pair status changes to PSUS SP or PSUP and copying data is started asynchronously When the copy operation completes the pair status changes to SMPL PD or SMPP When the pair deletion completes the pair status changes to SMPL The S VOL becomes unpaired a DP VOL a...

Page 41: ...us Pair status Primary volume Secondary volume Read Write Read Write SMPL Y Y Y Y COPY Y Y N N PAIR Y Y N N PSUS SP or PSUP Y Y Y Y SMPL PD or SMPP Y Y Y Y PSUE Y Y N N Copy threshold option and host server I O performance for Thin Image You can enable the copy threshold option to help minimize the decline of host server I O performance by lowering the workload on the storage system I O performanc...

Page 42: ...hin Image volumes with other software applications You can create Thin Image HTI pairs using pair volumes for other replication software applications such as ShadowImage and TrueCopy You can also create Thin Image pairs using volumes to which you define attributes using Data Retention Utility or CCI You can share Thin Image volumes with the following software application volumes Data Retention Uti...

Page 43: ...abled Yes Yes8 Deduplication system data volume No No 1 If you use HDvM SN to share the volume with other software applications the pair status determines whether you can share the volume 2 To share the volume with other software applications you must use CCI 3 You cannot Quick Restore 4 Use the Data Retention Utility VSP G1000 G1500 and VSP F1500 to set this attribute 5 Use CCI to set this attrib...

Page 44: ...o the S VOL Also you can assign access attributes to Thin Image P VOL and S VOLs The tables below also explain Thin Image pair tasks and pool tasks after access attributes are assigned Access attributes and supported Thin Image pair tasks The following table lists the relationship between P VOL and S VOL access attributes and Thin Image pair tasks when using HDvM SN to assign Data Retention Utilit...

Page 45: ...when using CCI or HDvM SN to assign Data Retention Utility access attributes Volume access attributes specified by HTI Pool VOL setting Read Write Yes Read Only No Protect No S VOL Disable No Legend Yes You can perform the task No You cannot perform the task Note Performing a Thin Image task does not change the volume access attributes Required Thin Image pair status when using Data Retention Util...

Page 46: ...ows the Thin Image pair status that is required to use Data Retention Utility to assign access attributes to some Thin Image P VOLs and S VOLs when also using CCI to assign Data Retention Utility access attributes HTI volume Access attribute to be assigned Pair status Volume Read Write Read Only Protect S VOL Disable COPY P VOL Yes Yes S VOL Yes No PAIR PFUL P VOL Yes Yes S VOL Yes Yes PSUS PFUS P...

Page 47: ... Sharing Thin Image volumes with ShadowImage You can share Thin Image HTI P VOLs with ShadowImage SI P VOL and S VOLs Available Thin Image tasks The following table lists the Thin Image tasks you can perform when sharing a Thin Image P VOL with a ShadowImage P VOL HTI task SI pair status COPY P D COPY PAI R COPY S P COPY PSUS S P PSUS PSU S COPY R S COPY COPY R S R RCPY PSU E Create pair Yes Yes Y...

Page 48: ...it PSUS status If the SI pair status changes to a status other than PSUS while HTI is storing snapshot data for the consistency group the snapshot data consistency cannot be guaranteed Legend Yes You can perform the task No You cannot perform the task the command is rejected N A Not applicable Available ShadowImage tasks The following table lists the ShadowImage tasks you can perform when sharing ...

Page 49: ...e consistency of the stored snapshot data is not guaranteed Thin Image S VOLs use the data in the P VOL You cannot Quick Restore in ShadowImage For more information about ShadowImage tasks and pair statuses see the Hitachi ShadowImage User Guide Caution Thin Image uses MU numbers 0 to 1 023 and they are assigned in the order of 3 to 1 023 followed by 0 to 2 ShadowImage uses MU numbers 0 to 2 Thin ...

Page 50: ...Suspending Deleting Create pair Yes Yes Yes Yes Yes Yes Yes Store snapshot data No Yes Yes Yes Yes Yes Yes Restore pair No No No No No No No Delete snapshot data Yes Yes Yes Yes Yes Yes Yes Delete pair Yes Yes Yes Yes Yes Yes Yes When restoring an HTI pair and you are using the P VOL as a TC or UR S VOL switch tasks to the remote storage system using the horctakeover command Legend Yes You can per...

Page 51: ...Yes N A Yes Resynchronize pair Yes Yes Yes N A Yes Delete pair Yes Yes Yes N A Yes Switch to remote storage Yes Yes Yes N A Yes Use a TC UR S VOL as an HTI P VOL Legend Yes You can perform the task No You cannot perform the task the command is rejected N A Not applicable Volume backup with Thin Image TrueCopy and Universal Replicator in a 3DC multitarget configuration workflow You can use Thin Ima...

Page 52: ...plicator volumes on the remote sites in a 3DC multitarget configuration The following figure shows how to back up the volumes Pairs 1 and 2 are Universal Replicator pairs Pair 3 is a Universal Replicator pair for delta resync Pairs 4 5 and 6 are Thin Image pairs You must create pairs 1 and 2 before creating pairs 5 and 6 but pair 4 can be created at any time Volume backup with Thin Image and Unive...

Page 53: ...es stop I O to a volume before storing snapshot data Snapshot consistency cannot be guaranteed if you store snapshot data without stopping I O to the volume For more information about GAD see the Global Active Device User Guide The following table lists the Thin Image tasks you can perform when the P VOL is shared with a GAD P VOL GAD status I O mode HTI task Create pair Store snapshot data Restor...

Page 54: ... can perform the task No You cannot perform the task the command is rejected Storage system configuration with Thin Image and GAD Not all storage system configurations are supported when sharing a Thin Image volume with a GAD volume When you create a Thin Image pair using a volume from a GAD pair the server recognizes the GAD P VOL and S VOL as a single volume If you create Thin Image pairs using ...

Page 55: ...ng figure shows a supported storage system configuration with a Thin Image pair using a GAD S VOL Overview of Thin Image 55 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 56: ...igure shows a supported storage system configuration with Thin Image pairs using a GAD P VOL and S VOL 56 Overview of Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 57: ...g Thin Image volumes that are already being used as a GAD P VOL and S VOL The following figure shows this unsupported storage system configuration Overview of Thin Image 57 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 58: ...cy group must be in the same storage system Therefore if a GAD P VOL and S VOL are each used in Thin Image pairs the Thin Image pairs cannot be registered to the same consistency group Supported configuration The following figure shows a supported consistency group configuration 58 Overview of Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 59: ...orted configuration The following figure shows an unsupported consistency group configuration Overview of Thin Image 59 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 60: ...t group must be in the same storage system Therefore if a GAD P VOL and S VOL are each used in Thin Image pairs the Thin Image pairs cannot be registered to the same snapshot group Supported configuration The following figure shows a supported snapshot group configuration 60 Overview of Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 61: ...ported configuration The following figure shows an unsupported snapshot group configuration Overview of Thin Image 61 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 62: ...in a single storage system note the following when creating Thin Image pairs Data compressed or deduplicated by the capacity saving function is copied to a volume The capacity saving function is not performed immediately for copied data Before creating or resynchronizing a Thin Image pair make 62 Overview of Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and...

Page 63: ...e Unmap command operation is in progress with system option mode 905 ON Wait a while and then retry the operation If the operation still fails set system option mode 905 to OFF and try again You can use a maximum size Dynamic Provisioning volume as a Thin Image P VOL or S VOL For information about the maximum size for Dynamic Provisioning volumes see the Provisioning Guide for your storage system ...

Page 64: ...n it is required to inform maintenance personnel of these SIM RCs OFF 749 Dynamic Provisioning Dynamic Provisioning for Mainframe Dynamic Tiering Dynamic Tiering for Mainframe Thin Image This mode disables the HDP Rebalance function and the HDT Tier relocation function which allow the drives of all ECC Groups in the pool to share the load Mode 749 ON The HDP Rebalance function and the HDT Tier rel...

Page 65: ...ge system which is used as an external VOL is used as a pool VOL if the external pool on the external storage side becomes full due to the background format the external VOL may be blocked If the external pool capacity is smaller than the external VOL capacity Dynamic Provisioning VOL of external storage system do not enable the background format function 4 If the background format function is dis...

Page 66: ...mes FCv2 Compatible FlashCopy V2 FCSE Hitachi Compatible FlashCopy GAD global active device SI ShadowImage SIz ShadowImage for Mainframe TC TrueCopy TCz TrueCopy for Mainframe HTI Hitachi Thin Image UR Universal Replicator URz Universal Replicator for Mainframe 66 Overview of Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 67: ...s associated with licensed capacity shared memory volume data pool and for general planning and mangement tasks Thin Image system requirements Thin Image planning requirements Thin Image system and planning requirements 67 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 68: ... for HDP For more information about license keys and installing HDvM SN and HDP see the System Administrator Guide for your storage system Installing Thin Image Use this procedure to install Thin Image Procedure 1 Install Dynamic Provisioning Note Dynamic Provisioning is prerequisite software for Thin Image 2 Install Thin Image Uninstalling Thin Image Use this procedure to remove Thin Image from H...

Page 69: ...re not in use by Thin Image pairs For more information about licenses see the System Administrator Guide for your storage system Related concepts VSP family software applications for Thin Image on page 25 Thin Image shared memory requirements Thin Image requires dedicated shared memory SM for the Thin Image pair management area The Thin Image pair management area is an area used to store informati...

Page 70: ...r VSP G1000 G1500 and VSP F1500 64KLDEV Extension For VSP Gx00 models and VSP Fx00 models Extension1 For more information about how to expand reduce or remove shared memory contact customer support Related concepts Switching off the power supply on page 193 Related tasks Deleting pools on page 187 Thin Image volume requirements Thin Image requires three types of volumes The following types of volu...

Page 71: ...n Image S VOLs An S VOL must be specified if you want to create a Thin Image pair with an S VOL If you create a Thin Image pair without an S VOL an S VOL need not be specified Item Requirement Volume type Thin Image V VOL V VOLs of provisioning type Snapshot or DP VOL You cannot specify the following volumes as HTI S VOLs Volumes that are already used as S VOLs Volumes that other software applicat...

Page 72: ...ata pool Volumes must be in the same resource group External pool VOLs must have the same cache mode either enabled or disabled When using both internal and external volumes the external volumes must have cache mode enabled Emulation type OPEN V RAID level All RAID levels are supported Data drive type You can use SAS and SSD Regardless of the type of the volume internal volume or external volume y...

Page 73: ...nsion2 or DP HDT Active Flash TI Extension3 is added in the shared memory capacity The maximum pool capacity that can be used for each primary volume is 768 TB Pool VOL limit per pool 1 024 Note You cannot assign a volume that is already assigned to a pool as a pool VOL to another pool Pool limit per storage system VSP G200 VSP G400 G600 64 Pool IDs are assigned from 0 to 63 VSP G800 VSP G1000 G15...

Page 74: ...48 consistency groups in a VSP G1000 G1500 and VSP F1500 storage system Manual assignment of a consistency group ID to an HTI pair using the paircreate command Specify a consistency group ID from 0 to 255 Automatic assignment of a consistency group ID to an HTI pair using the paircreate or raidcom add snapshot commands Using the paircreate command if a number is not specified an unassigned number ...

Page 75: ...t be the P VOL data generated when VSP G1000 and G1500 and VSP F1500 received the pairsplit command Only one consistency group can be specified for a group defined in the CCI configuration definition file When a pair where a consistency group is specified and already created if you specify another consistency group to create a pair the pair is added to the same consistency group To specify multipl...

Page 76: ...rs again you only need to know the number of pair tables to calculate the number of pairs that you can create You do not need to know the snapshot estimated manageable capacity or the number of cache management devices If you have multiple P VOLs calculate the number of Thin Image pairs that you can create for each P VOL in the storage system Calculating the number of Thin Image pairs based on pai...

Page 77: ...perform HTI tasks such as creating HTI pairs for a volume To view the number of cache management devices see Viewing the number of cache management devices on page 170 Use the following formula to calculate the number of HTI pairs that you can create based on the number of cache management devices Number of HTI pairs that you can create Number of cache management devices ceil the P VOL capacity of...

Page 78: ...f pairs 2 42 MB 42 MB Σ P VOL capacity MB Number of pairs 2 2 921 688 MB 175 434 MB Decimal places of the value enclosed by arrows value are rounded up As for Number of pairs in the formula allocated pages are not released if you delete pairs Because of this use the maximum number of TI pairs you want to create in the applicable snapshot tree as Number of pairs instead of using the number of pairs...

Page 79: ...airs the maximum number of TI pairs you can create in the applicable snapshot tree is the same The TI pair capacity does not change Also if you you split pairs twice the maximum number of TI pairs you can create in the snapshot tree is the same and the TI pair capacity remains unchanged Thin Image system and planning requirements 79 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platfor...

Page 80: ...nagement devices in a storage system Calculating and assigning pool capacity Use these formulas to calculate and assign pool capacity Use the following formula to calculate the capacity of the snapshot data that you can store in the Thin Image pool Capacity of the snapshot data that you can store in the pool Total capacity of pool VOLs in the pool Capacity of V VOL management areas The capacity of...

Page 81: ...ion2 Extension3 and Extension4 are added to the shared memory capacity VSP G1000 and G1500 and VSP F1500 12 3 PB Related references Thin Image shared memory requirements on page 69 Resolving insufficient pool capacity Make sure you have sufficient pool capacity If the pool capacity is insufficient the storage system can suspend Thin Image pairs PSUE status Note When the setting Suspend TI pairs wh...

Page 82: ...data the target for the backup is only the areas where the snapshot data is stored Therefore you can create a backup copy even if the pool capacity is small During creation of a backup copy a significant amount of data is read from the secondary volume This may increase the accesses to the primary volume and degrade the host I O performance Procedure 1 Store the snapshot data or clone pairs 2 Use ...

Page 83: ...units in the storage system Note The terms blade and unit refer to the same hardware on different VSP storage systems The term blade is used for VSP G1000 G1500 and VSP F1500 and the term unit is used for VSP G200 G400 G600 G800 For each of the following pair tasks the number of simultaneous instances processed in the background is equal to the total number of MP blades or units in the storage sys...

Page 84: ...N N N N YN SMPL PD N N N N N N YN With the clone attribute COPY PD N N N N N N YN PAIR Y N N N Y N YN PSUS SP Y N N N Y N YN PSUE N N N N N N YN SMPL PD N N N N N N YN Y Operation successful YN Operation not performed process terminated N Process terminated abnormally The following table explains operations of cascaded pair B when pair B has the snapshot attribute and its pair status is COPY PD 84...

Page 85: ... N N SMPL PD N A N A N A N A N A N A N A With the clone attribute COPY PD YN N YN YN N N N PAIR YN N YN YN N N N PSUS SP YN N YN YN N N N PSUE YN N YN YN N N N SMPL PD N A N A N A N A N A N A N A Y Operation successful YN Operation not performed process terminated N Process terminated abnormally The following table explains operations of cascaded pair A when pair B has the snapshot attribute and i...

Page 86: ...N YN N N N SMPL PD N A N A N A N A N A N A N A With the clone attribute COPY PD N N N N N N N PAIR N N N N N Y N PSUS SP N N N N N YN N PSUE N N N N N N N SMPL PD N A N A N A N A N A N A N A Y Operation successful YN Operation not performed process terminated N Process terminated abnormally The following table explains operations of cascaded pair B when pair B has the clone attribute and its pair ...

Page 87: ... N N N Y PSUE N N N N N N Y SMPL PD N A N A N A N A N A N A N A With the clone attribute COPY PD N N N N N N Y PAIR N N N N N N Y PSUS SP N N N N N N Y PSUE N N N N N N Y SMPL PD N A N A N A N A N A N A N A Y Operation successful N Process terminated abnormally The following table explains operations of cascaded pair A when pair B has the clone attribute and its pair status is COPY PD Thin Image s...

Page 88: ... N N N N SMPL PD N A N A N A N A N A N A N A With the clone attribute COPY PD N N N N N N N PAIR N N N N N Y N PSUS SP N N N N N YN N PSUE N N N N N N N SMPL PD N A N A N A N A N A N A N A Y Operation successful YN Operation not performed process terminated N Process terminated abnormally The following table explains operations of cascaded pair B when pair B has the snapshot attribute and its pair...

Page 89: ...SMPL PD N A N A N A N A N A N A N A With the clone attribute COPY PD N N YN YN N N Y PAIR N N YN YN N N Y PSUS SP N Y YN YN N N Y PSUE N A N A N A N A N A N A N A SMPL PD N A N A N A N A N A N A N A Y Operation successful YN Operation not performed process terminated N Process terminated abnormally The following table explains operations of cascaded pair A when pair B has the snapshot attribute an...

Page 90: ... N A SMPL PD N A N A N A N A N A N A N A With the clone attribute COPY PD N N N N N N N PAIR N N N N N Y N PSUS SP N N N N N YN N PSUE N A N A N A N A N A N A N A SMPL PD N A N A N A N A N A N A N A Y Operation successful YN Operation not performed process terminated N Process terminated abnormally The following table explains operations of cascaded pair B when pair B has the clone attribute and i...

Page 91: ...SMPL PD N A N A N A N A N A N A N A With the clone attribute COPY PD N N N N N N Y PAIR N N N N N Y Y PSUS SP N N N N N Y Y PSUE N A N A N A N A N A N A N A SMPL PD N A N A N A N A N A N A N A Y Operation successful YN Operation not performed process terminated N Process terminated abnormally The following table explains operations of cascaded pair A when pair B has the clone attribute and its pai...

Page 92: ...A N A N A SMPL PD N A N A N A N A N A N A N A With the clone attribute COPY PD N N N N N N N PAIR N N N N N Y N PSUS SP N N N N N YN N PSUE N A N A N A N A N A N A N A SMPL PD N A N A N A N A N A N A N A Y Operation successful YN Operation not performed process terminated N Process terminated abnormally The following table explains operations of cascaded pair B when the status of pair B is not SMP...

Page 93: ... P 2 N N N N N N Y With the clone attribut e PSUS S P PSUS S P 2 N N N N N N Y PSUS S P PSUE 2 N N N N N N Y PSUS S P SMPL P D 2 N N N N N N YN PSUS S P PSUS 1 N YN Y Y N N N Y Operation successful YN Operation not performed process terminated N Process terminated abnormally Notes 1 Pair B has snapshot attribute 2 Pair B has clone attribute The following table explains operations of cascaded pair ...

Page 94: ...N YN N N N N N With the clone attribut e PSUS S P PSUS S P 2 N N N N N YN N PSUS S P PSUE 2 N N N N N YN N PSUS S P SMPL P D 2 N N N N N YN N PSUS S P PSUS 1 N N N N N YN N Y Operation successful YN Operation not performed process terminated N Process terminated abnormally Notes 1 Pair B has snapshot attribute 2 Pair B has clone attribute Pair operations when pairs are not cascaded The following t...

Page 95: ... N N N PSUE N N Y N N N Y SMPL PD N N N N N N YN With the clone attribute COPY PD N N N N N N Y PAIR N N N N N Y Y PSUS SP N N N N N YN Y PSUE N N N N N N Y SMPL PD N N N N N N YN Y Operation successful YN Operation not performed process terminated N Process terminated abnormally Pair operations when a P VOL is shared by multiple S VOLs The following table explains pair operations according to the...

Page 96: ... Y Y Y Y Operation successful N Process terminated abnormally Differences between Thin Image and ShadowImage Item Thin Image HTI ShadowImage SI P VOL physical failures such as hard disks P VOL data cannot be guaranteed P VOL data can be recovered using the S VOL P VOL logical failures such as data update errors or viruses P VOL data can be recovered using the S VOL P VOL data can be recovered usin...

Page 97: ...created the P VOL and the S VOL can be separated and the P VOL performance is not affected Recommended usage To maintain backed up data for long periods save it on magnetic tapes or other media For temporary backups use HTI or SI When backing up data to magnetic tapes use SI To reduce the capacity necessary for backups use HTI but note that this affects P VOL performance Use SI to minimize the imp...

Page 98: ...Use HTI to minimize P VOL logical failures 98 Thin Image system and planning requirements Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 99: ... configuring Thin Image Workflow for configuring Thin Image Workflow for registering virtual volumes Overview of using CCI to run commands through in band connections Changing system options that affect Thin Image performance Configuring Thin Image 99 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 100: ...management area in the shared memory This area is automatically created when you install additional shared memory Workflow for configuring Thin Image Use this workflow to configure Thin Image The following image shows the configuration tasks workflow and the workflow for creating and managing Thin Image pairs Steps for configuring Thin Image 100 Configuring Thin Image Hitachi Thin Image User Guide...

Page 101: ...a over the P VOL see Restoring Thin Image pairs on page 141 4 Maintain the Thin Image pair status see How Thin Image pair status changes on page 37 5 Delete the Thin Image pairs see Deleting Thin Image pairs on page 146 For pairs with the snapshot attribute create a Thin Image pair to store snapshot data Note however that you can create up to 1 024 pairs for a P VOL Therefore you must delete snaps...

Page 102: ...ts for Thin Image pool VOLs listed in Thin Image volume requirements on page 70 Before you begin You must have the Storage Administrator Provisioning role Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree and then click Pools 2 In the Pools window select Create Pools 3 In the Create Pools window of the Create Pools wizard complete the following items for the poo...

Page 103: ...ier Enter 0 and an integer number Integer number range 0 127 Default The smallest available number displays as the default If no available pool ID exists no number appears If an already registered pool ID is entered the smallest available pool ID that is larger than the one entered is used Warning Threshold The data pool capacity threshold Range 20 95 Default 80 The pool VOL is added to the Select...

Page 104: ...page 104 Increasing pool capacity on page 173 Selecting pool volumes You can select a pool VOL to add when creating pools The selected pool VOL s information is used to calculate Total Selected Pool Volumes and Total Selected Capacity in the Create Pools window Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree and then click Pools 2 In the Pools window select Cr...

Page 105: ... section click Select Pool VOLs 4 In the Select Pool VOLs window from the Available Pool Volumes table select the pool VOL you want to add to the pool and then click Add Configuring Thin Image 105 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 106: ... select the tier rank from External LDEV Tier Rank and then click Add Note To specify conditions to display pool volumes click Filter to open the menu specify the filtering conditions and then click Apply To select all pool VOLs in the table click Select All Pages To cancel the selection click Select All Pages again To specify the unit or the number of rows to be displayed click Options 5 Click OK...

Page 107: ...ng V VOL settings on page 110 3 Register the V VOL see Creating V VOLs for Thin Image S VOLs on page 113 Editing the SSID for virtual volumes VSP G1000 G1500 and VSP F1500 Before registering a V VOL you may need to edit the control unit s CU SSID which you use to create new LDEVs Use the Change SSIDs window to edit a V VOL s SSID Before you begin You must have the Storage Administrator Provisionin...

Page 108: ...e Create LDEVs window of the Create LDEVs wizard in the Selected LDEVs table click Edit SSIDs 108 Configuring Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 109: ...t the row of the SSID you want to edit and then click Change SSIDs 5 In the Change SSIDs window for Initial SSID enter the new SSID and click OK 6 In the Edit SSIDs window click OK 7 Click Finish and then confirm the settings Configuring Thin Image 109 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 110: ...page 170 Related references Replication window on page 226 Changing V VOL settings You can edit the V VOL settings before registering a V VOL Before you begin You must have the Storage Administrator Provisioning role Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree and then click Pools 2 In the Pools window in the Pools tab click Create LDEVs 110 Configuring Th...

Page 111: ...ndow of the Create LDEVs wizard in the Selected LDEVs table select an LDEV and then click Change LDEV Settings Configuring Thin Image 111 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 112: ...MP blade ID To assign an arbitrary MP blade identifier click Auto MP Unit ID VSP Gx00 models and VSP Fx00 models Select the MP Unit ID to which you want to assign the LDEV To specify an MP Unit ID select the MP Unit ID To assign an arbitrary MP Unit ID click Auto The MP Unit ID that you can select depends on the storage system model 5 Click Finish and then confirm the settings 6 Accept the default...

Page 113: ... when you create snapshot pairs that are cascaded For information about creating a DP VOL see the Provisioning Guide for your storage system For snapshot pairs for which the cascade attribute is disabled create a Thin Image V VOL Before you begin You must have the Storage Administrator Provisioning role Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree and then ...

Page 114: ...x Required Yes LDEV Name Enter a name for the V VOL For Prefix enter the case sensitive alphanumeric characters which become the fixed characters that precede the V VOL number For Initial Number enter the initial number for V VOL up to 9 digits You can enter up to 32 characters in total for Prefix and Initial Number 4 In the Create LDEVs window of the Create LDEVs wizard complete the following add...

Page 115: ... LDEV To specify an MP Unit ID select the MP Unit ID To assign an arbitrary MP Unit ID click Auto The MP Unit ID that you can select depends on the VSP storage system model Required No The created LDEVs are added to the Selected LDEVs table Note The Provisioning Type System Type Emulation Type LDEV Capacity and Number of LDEVs fields must be set If these items are not set you cannot click Add 5 Cl...

Page 116: ...k Edit SSIDs For details on how to edit SSIDs see Editing the SSID for virtual volumes VSP G1000 G1500 and VSP F1500 on page 107 b To change the LDEV settings click Change LDEV Settings For details on how to change LDEV settings see Changing V VOL settings on page 110 116 Configuring Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 117: ...ick Apply to submit the task Related references Sharing Thin Image volumes with Dynamic Provisioning and Dynamic Provisioning for Mainframe in a single storage system on page 62 Removing LDEVs from registering tasks The LDEVs that are shown in the Selected LDEVs table in the Create LDEVs window are those that are set to be registered and created You can choose to not register the LDEV by removing ...

Page 118: ...EVs table complete the following a Select the check box for the LDEV you want to remove from the registering task and then click Remove b In the warning message that appears click OK to confirm that you want to remove the selected LDEV 4 Click Finish and then confirm the settings 118 Configuring Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 119: ...st server Complete these steps to restart a host server such as HP UX or Solaris or to run commands to V VOLs to recognize devices from the host server Note Do not change the volume of the recognized device by the host server to a V VOL Procedure 1 Create the Thin Image pairs 2 Split the pair to store the snapshot data using one of the available methods 3 Ensure that the V VOL recognized by the ho...

Page 120: ...r if you used the host server to run the commands to recognize devices and the host server was stopped use the following workflow to run the commands 1 Forcibly stop the process of the command and those of its parent process 2 Create the Thin Image pair 3 Store the snapshot data or clone pairs 4 Rerun the command to recognize devices On the server including CCI the emulation type of the V VOL is s...

Page 121: ...tions that affect Thin Image performance using Device Manager Storage Navigator as described here or Command Control Interface For details about how to change system options using Command Control Interface see the Command Control Interface User and Reference Guide Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree and then click Replication 2 In the Replication w...

Page 122: ...ptions wizard for System Type confirm that Open is selected Default Open 4 In the SI TI System Options table select the system option you want to change and then click Enable or Disable 122 Configuring Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 123: ...an enter up to 32 letters numbers and symbols except the following 7 If you want to monitor the task after submitting it select Go to tasks window for status 8 Click Apply to submit the task Configuring Thin Image 123 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 124: ...124 Configuring Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 125: ...e Navigator Example of creating complex Thin Image pairs Creating Thin Image pairs and defining them in snapshot or consistency groups using CCI Workflow for defining Thin Image pairs and defining them in snapshot or consistency groups using Device Manager Storage Navigator Storing snapshot data or cloning pairs Splitting Thin Image pairs to store snapshot data Workflow for storing snapshot data o...

Page 126: ...ary volumes to Thin Image pair snapshot data Releasing assignment of secondary volumes from Thin Image pair snapshot data Changing assignment of secondary volumes to Thin Image pair snapshot data 126 Managing Thin Image Pairs Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 127: ... in consistency groups on page 137 Workflow for defining Thin Image pairs and defining them in snapshot or consistency groups using Device Manager Storage Navigator on page 135 Related tasks Checking Thin Image pair status on page 127 Creating Thin Image pairs using Device Manager Storage Navigator on page 130 Splitting Thin Image pairs to store snapshot data on page 136 Restoring Thin Image pairs...

Page 128: ... Check the pair status see Checking Thin Image pair status on page 127 4 Create the Thin Image pair in one of the following ways Create the pair using HDvM SN For more information about how to create HTI pairs using HDvM SN see Workflow for creating Thin Image pairs using Device Manager Storage Navigator on page 129 Create the pair using CCI and assign the pair to a snapshot group For more informa...

Page 129: ... data corresponding to the P VOL The following image shows this configuration Creating Thin Image pairs using HDvM SN involves the following steps 1 Select the P VOL 2 Assign the S VOL to snapshot data 3 Confirm that you want to create the pair Related tasks Creating Thin Image pairs using Device Manager Storage Navigator on page 130 Managing Thin Image Pairs 129 Hitachi Thin Image User Guide for ...

Page 130: ...atus do not create Thin Image pairs while you are shutting down the storage system Requirements The P VOL and S VOLs you select must be the same size in blocks if you create a Thin Image pair with an S VOL specified If the capacity is displayed in GB or TB a small difference between P VOL and S VOL capacity might not be displayed To view the capacity in blocks click Options Capacity Unit block in ...

Page 131: ...ear in the Available Primary Volumes table 7 In Cascade select Enable to create a cascaded pair 8 In Pair Type select Snapshot to create a pair with the snapshot attribute Select Clone to create cloned pairs Skip to step 11 if you selected No for Create Pairs using Volumes as Root Volumes 9 Click Select Pool 10 In the Select Pool window select a pool from the Available Pools table 11 Click OK 12 F...

Page 132: ... a row in the Selected Pairs table and then click Set you can configure a pair If you select LDEVs which were assigned to an S VOL with the Exclude Assigned Volumes check box unchecked you can change the S VOL to which snapshot data is assigned 16 Click Finish and then confirm the settings 17 Accept the default task name or enter a unique name You can enter up to 32 letters numbers and symbols exc...

Page 133: ...lect Pool 4 In the Select Pool window from the Available Pools table select the pool you want to add and then click OK The selected pool is displayed in Select Pool on the Create TI Pairs window Example of creating complex Thin Image pairs A complex Thin Image pair is a pair where the P VOL and S VOL are not connected one to one The following is an example of how to create Thin Image pairs of diff...

Page 134: ...es window and then click Set Creating Thin Image pairs and defining them in snapshot or consistency groups using CCI You can create pairs and define the pairs in a snapshot group or in a consistency group Define pairs to consistency groups to perform pair tasks on all of the pairs within the group This task describes how to do this using CCI Note If the host is down the CCI command might be reject...

Page 135: ...hich you want to assign the pair For more information about how to view a list of consistency groups see Viewing the list of consistency groups on page 164 2 Create a pair and define it to a consistency group For more information about how to create pairs and define them in consistency groups see Creating Thin Image pairs using Device Manager Storage Navigator on page 130 Related concepts Storing ...

Page 136: ...umber of pairs in selected snapshot groups exceeds 37 768 an error message appears when attempting to perform pair tasks Before you begin You must have the Storage Administrator Local Copy role The Thin Image pair status must be PAIR Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree expand Replication and then click Local Replication 2 In the Local Replication w...

Page 137: ...This process explains how to use CCI s consistency group pair split to store snapshot data or clone pairs for each consistency group Use the following process to split Thin Image pairs to store snapshot data or clone pairs 1 If the pairs are not created Create two Thin Image pairs and assign both pairs to the same consistency group To do this using CCI run the following raidcom command twice using...

Page 138: ...otes on storing snapshot data and on cloning pairs on page 223 Using consistency group pair split with shared volumes If you are sharing Thin Image P VOLs with ShadowImage Universal Replicator or TrueCopy S VOLs within a storage system you can use consistency group pair split to split the pairs that are defined in a consistency group to store the snapshot data Consistency group pair split maintain...

Page 139: ...show the consistency group pair split configuration when sharing Thin Image P VOLs with TrueCopy S VOLs Managing Thin Image Pairs 139 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 140: ...atus Can you use consistency group pair split UR S VOL COPY No PAIR Yes PSUS Yes TC S VOL COPY No PAIR Yes PSUS Yes SI S VOL COPY No PAIR No COPY SP No PSUS SP No PSUS Yes COPY RS No COPY RS R No PSUE No 140 Managing Thin Image Pairs Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 141: ...e pair and you are storing snapshot data for a consistency group including the latter pair Caution Failures can occur while restoring Thin Image pairs which suspends the pairs PSUE status For more information about restoring suspended Thin Image pairs see Restoring suspended Thin Image pairs on page 143 The amount of time required for restoration depends on the following even if the pair synchroni...

Page 142: ...rimary for a full restoration of P VOL data from the S VOL 6 Click Finish and then confirm the settings 7 Accept the default task name or enter a unique name You can enter up to 32 letters numbers and symbols except the following 8 If you want to monitor the task after submitting it select Go to tasks window for status 9 Click Apply to submit the task Result The Thin Image pair is restored PAIR st...

Page 143: ...eletes the replaced data the data in the pool Resynchronizing a pair maintains the relationship between the P VOL and S VOLs The amount of time required for resynchronization depends on the following even if the pair resynchronization rate is 100 percent The amount of capacity the pool is using The number of pairs being resynchronized concurrently Pair resynchronization methods You can forward or ...

Page 144: ...xplorer pane click Storage Systems expand the storage system tree expand Replication and then click Local Replication 2 In the Local Replication window select a P VOL in the TI Root Volumes tab or a snapshot group in the Snapshot Groups tab 3 Click Operate TI Pairs 4 In the TI Pairs window select the pair you want to resynchronize and then click Resync Pairs 5 For Resync Type select Normal Copy Pr...

Page 145: ...red In this case you cannot create a new Thin Image pair therefore you must delete snapshot data which is no longer necessary To delete snapshot data perform either of the following methods Deleting Thin Image pairs Deleting Thin Image pairs deletes snapshot data stored in a pool and cancels the relationship between the P VOL and the S VOL Deleting snapshot data only To delete snapshot data only u...

Page 146: ...ed volumes in other pairs You cannot create pairs in the SMPL PD status and you cannot allocate an S VOL to snapshot data or cancel or change the allocation To shorten the time in the SMPL PD status delete snapshot data if any and delete pairs after the pair status changes to PAIR When you set a snapshot group if all pairs in a snapshot group are unpaired the snapshot group is automatically remove...

Page 147: ... must have the Storage Administrator Local Copy role The Thin Image pair must be suspended PSUE status paired PAIR status or split PSUS status Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree expand Replication and then click Local Replication 2 In the Local Replication window select a P VOL in the TI Root Volumes tab or a snapshot group in the Snapshot Groups ...

Page 148: ...n PAIR status 2 Delete the pair Related tasks Resynchronizing Thin Image pairs on page 144 Removing Thin Image snapshot groups You can remove snapshot groups by deleting all of the pairs in the group Remove snapshot groups before performing the next pair task Note You can use HDvM SN only to reference consistency and snapshot groups and to remove snapshot groups You cannot use HDvM SN to delete co...

Page 149: ...number of pairs reaches 32 768 5 In Use Primary Volumes of Thin Image Pairs or Create Pairs using Volumes as Root Volumes select Yes or No 6 In Select By select LUN to create a pair by specifying LUN Select LDEV to create a pair without specifying LUN 7 From the Available Primary Volumes table select the LDEV you want to assign as the P VOL Note The nondisruptive migration volumes do not appear in...

Page 150: ...ign as the S VOL and then click Set The selected LDEV is displayed in the Secondary Volumes column of the Selected Pairs table Note The nondisruptive migration volumes do not appear in the Available Primary Volumes table If you select a capacity in Capacity the Available LDEVs and Selected Pairs tables display the LDEVs that match the selected capacity If you select a row in the Available LDEVs ta...

Page 151: ...torage Navigator until the total number of snapshots or clones reaches 32 768 In addition you can specify snapshot groups until the total number of pairs reaches 32 768 5 From the Available LDEVs table select the LDEV you want to assign as the S VOL and then click Set The selected LDEV is displayed in the Secondary Volumes column of the Selected Pairs table Note The nondisruptive migration volumes...

Page 152: ...torage Systems expand the storage system tree expand Replication and then click Local Replication 2 In the Local Replication window select a P VOL in the TI Root Volumes tab or a snapshot group in the Snapshot Groups tab 3 Click Operate TI Pairs 4 In the TI Pairs window select the S VOL pairs you want to delete and then click More Actions Remove Secondary Volumes 5 In the Remove Secondary Volumes ...

Page 153: ...table select the LDEV you want to assign as the S VOL and then click Set The selected LDEV is displayed in the Secondary Volumes column of the Selected Pairs table Note The nondisruptive migration volumes do not appear in the Available Primary Volumes table If you select a capacity in Capacity the Available LDEVs and Selected Pairs tables display the LDEVs that match the selected capacity If you s...

Page 154: ...t select Go to tasks window for status 9 Click Apply to submit the task Related references Assign Secondary Volumes window on page 289 154 Managing Thin Image Pairs Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 155: ...nformation Monitoring consistency groups Viewing Thin Image pair task history Viewing licensed capacities Viewing the number of cache management devices Managing pools Managing virtual volumes Viewing snapshot data capacity VSP G1000 G1500 and VSP F1500 Maintaining pairs during storage system maintenance Definition of failure Monitoring and maintaining Thin Image 155 Hitachi Thin Image User Guide ...

Page 156: ...r of LDEVs used for replication Number of FCv2 FCSE Relationships VSP G1000 G1500 and VSP F1500 The number of FCv2 and FCSE relationships that are in use Number of Differential Tables The number of differential tables that are in use and the differential table limit in the storage system This number does not include the number of differential tables that FCv2 FCSE Relationships use Note Thin Image...

Page 157: ...in Image performance on page 121 Viewing local replication summary information on page 157 Viewing Thin Image pair task history on page 167 Related references Replication window on page 226 Viewing local replication summary information You can view summary local replication information such as the number of pairs for each software application you are using in the summary section of the Local Repli...

Page 158: ...applications you are using Values SI SIMF Volume Migration The number of SI SIz and Volume Migration pair tables in use and the SI SIz and Volume Migration pair table limit in the storage system HTI The number of HTI pair tables in use and the HTI pair table limit in the storage system Number of Differential Tables The number of differential tables that are in use and the differential table limit ...

Page 159: ... volumes Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree expand Replication and then click Local Replication 2 In the Local Replication window select the TI Root Volumes tab Monitoring and maintaining Thin Image 159 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 160: ...command results see CCI pair command results on page 213 The following table describes the Thin Image pair status definitions the S VOL access for the status and the corresponding status that is shown in CCI Pair status Description S VOL access Status shown in CCI SMPL PD The pair is in the process of being deleted You cannot perform pair tasks when the pair is in this status and you cannot assign...

Page 161: ...k Restore Read Write disabled RCPY PSUE The pair is suspended The S VOL does not accept read write operations Read Write disabled PSUE Notes 1 SMPL SMPP is displayed if the key opt option is specified for the raidcom get snapshot command SMPP appears when cascaded or cloned pairs are being deleted 2 Starting time of the copy depends on numbers of pairs and your system environment Viewing pair sync...

Page 162: ...tor Local Copy role Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree expand Replication and then click Local Replication 2 In the Local Replication window select a P VOL in the TI Root Volumes tab or a snapshot group in the Snapshot Groups tab 3 Click Operate TI Pairs 4 In the TI Pairs window select the pair for which you want to monitor synchronization rates a...

Page 163: ...references View Pair Synchronization Rate window on page 239 Monitoring consistency groups Viewing the number of consistency groups You can view the number of consistency groups that are in use Procedure 1 Navigate to one of the following windows Local Replication window For more information about how to view this information on this window see Viewing local replication summary information on page...

Page 164: ...es window on page 248 Viewing the list of consistency groups You can view the list of consistency groups Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree expand Replication and then click Local Replication 2 In the Local Replication window select the Consistency Groups tab 164 Monitoring and maintaining Thin Image Hitachi Thin Image User Guide for Hitachi Virtu...

Page 165: ...rties of a consistency group using the Consistency Group Properties window Before you begin You must have the Storage Administrator Local Copy role Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree expand Replication and then click Local Replication 2 In the Local Replication window select the Consistency Groups tab Monitoring and maintaining Thin Image 165 Hita...

Page 166: ...istency group SIMF Used PPRC BCM VSP G1000 G1500 and VSP F1500 SIz is using the consistency group and PPRC and Business Continuity Manager are managing the consistency group TI Used HTI is using the consistency group Mainframe Reserved VSP G1000 G1500 and VSP F1500 PPRC and Business Continuity Manager are using the consistency group Free The consistency group is not being used and is not reserved ...

Page 167: ... To view the next page click the right arrow at the top of the page For a VSP G200 G400 G600 G800 storage system you can view a maximum of the latest 8 192 pair tasks in the History window Note If you use 1 000 or more pairs concurrently some operation history might not be recorded Before you begin You must have the Storage Administrator Local Copy role Procedure 1 In the Explorer pane click Stora...

Page 168: ...P DP VOL External External volume Secondary Volume Information about the S VOL Mirror Unit The mirror unit number Pool ID The pool identification number Description Code The code for the type of task you performed Description The description of the task you performed Related references History window on page 247 Thin Image task code definitions The following table lists codes for certain types of ...

Page 169: ...PSUE ABNORMAL END A failure occurred and the pair is suspended The pair status changed to PSUE 2080 ASSIGN SECONDARY VOLUMES An S VOL is assigned to snapshot data 2081 REMOVE SECONDARY VOLUMES The assignment of an S VOL to snapshot data is released 2082 REPLACE SECONDARY VOLUMES The assignment of an S VOL to snapshot data is changed 2091 CLONE START Cloning pairs starts 2092 CLONE END Cloning pair...

Page 170: ... or by the Thin Image pair s root volume viewing the progress of rebalancing the pool usage rates among parity groups increasing pool volume by adding pool VOLs to a pool decreasing the pool volume and monitoring the pool usage rate Monitoring pool information You can monitor pool information such as used pool capacity in the Summary section of the Pools window and in the Primary Volumes tab of th...

Page 171: ...city Shows the used pool capacity Pool Usage Shows the pool usage rate Number of Paths Shows the number of alternate paths CLPR Shows the identifier and name of the CLPR in ID CLPR format Pool Management Task Shows the pool management task being performed on the pool Virtual Storage Machine Shows information about the virtual storage machine 4 Optional To export the information in the table click ...

Page 172: ...ow in the Provisioning Guide for your storage system Before you begin You must have the Storage Administrator Provisioning role Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree and then click Pools 2 View the used capacity of the pool in the Physical Capacity column of the Pools tab This column is not displayed by default To see this column add this using the C...

Page 173: ...stem Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree and then click Pools 2 In the Pools window in the Pools tab select the check box for the pool for which you want to view capacity from the list and then click More Actions View Pool Management Status 3 In the View Pool Management Status window view the following items Capacity Used Total The formatted pool c...

Page 174: ...only increase the capacity for one pool at a time Before you begin You must not be currently decreasing the pool capacity Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree and then click Pools 2 In the Pools tab select the check box for the pool to which you want to add a pool VOL from the list and then click Expand Pool 3 In the Expand Pool window of the Expand...

Page 175: ... and the number of rows to display in the Available Pool Volumes table click Options d In the Available Pool Volumes table select the LDEV you want and then click Add The LDEV is moved to the Selected Pool Volumes table Note If you are adding an LDEV belonging to a parity group for which accelerated compression is enabled see the related section in Provisioning Guide for your storage system Monito...

Page 176: ... unique name You can enter up to 32 letters numbers and symbols except the following 7 If you want to monitor the task after submitting it select Go to tasks window for status 8 Click Apply to submit the task 176 Monitoring and maintaining Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 177: ...t function for available pool capacity The following are circumstances under which the formatted pool capacity might decrease New pages are being allocated Correction copy is being executed Decreasing pool capacity You can decrease the pool capacity for up to eight tasks at the same time For more information about decreasing pool capacity formatting LDEVs and the Shrink Pool window see the Provisi...

Page 178: ...ee and then click Pools 2 In the Pools tab click the name of the pool for which you want to decrease capacity 3 In the Pool Name window in the Pool Volumes tab from the list of volumes select the check box for the pool that contains the pool VOLs you want to delete to decrease pool capacity and then click Shrink Pool Note You can select one or more pool volumes 178 Monitoring and maintaining Thin ...

Page 179: ...sk after submitting it select Go to tasks window for status 7 Click Apply to submit the task Result The tiers in pools are deleted and the pool capacity is decreased Stopping the process of decreasing pool capacity You can stop the process of decreasing pool capacity For more information about the Stop Shrinking Pools window see the Provisioning Guide for your storage system Monitoring and maintai...

Page 180: ... 3 In the Pool Name window in the Pool Volumes tab from the list of volumes select the check box for the pool that contains the pool VOLs for which you want to stop decreasing pool capacity and then click Stop Shrinking Pool Note You can select one or more pool volumes 180 Monitoring and maintaining Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series...

Page 181: ...ing the pool usage rate For more information about checking alerts and checking the details of a SIM see the System Administrator Guide for your storage system For more information about SNMP see the Hitachi SNMP Agent User Guide Before you begin You must not be decreasing the pool capacity Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree and then click Pools 2...

Page 182: ...age rates rates over 50 are rounded down to the closest integer Therefore excessive pool usage in SIM and SNMP might be reported when the actual pool usage rate exceeds the threshold even though the value shown is only 50 4 Click Finish and then confirm the settings 182 Monitoring and maintaining Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 183: ...pool names You can change the properties of a selected pool such as its name Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree and then click Pools 2 In the Pools tab from the list of pools select the check box for the pool whose name you want to change and then click More Actions Edit Pools Monitoring and maintaining Thin Image 183 Hitachi Thin Image User Guide...

Page 184: ... number This field is case sensitive Initial Number Enter the pool s new initial number using 9 digits or fewer The character limit for both fields together is 32 alphanumeric characters 4 Click Finish and then confirm the settings 184 Monitoring and maintaining Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 185: ...ow to recover a blocked pool Recovering blocked pool volumes When a pool volume is blocked contact customer support Recovering the pools Recover the pool by using one or both of the following methods Add additional pool VOLs Decrease the pool usage rate by deleting the P VOL s snapshot data Recovering Thin Image pairs When a pool is blocked all Thin Image pairs that contain snapshot data of the bl...

Page 186: ... disaster recovery purposes only Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree and then click Pools 2 In the Pools tab from the list of pools select the check box for the pool that you want to recover click More Actions Restore Pools and then confirm the settings 3 Accept the default task name or enter a unique name You can enter up to 32 letters numbers and...

Page 187: ...VOLs Deleting a pool blocks its pool VOLs LDEVs To use blocked pool VOLs format the volumes Note If the blocked pool VOL is an external volume select Normal Format when formatting the volume For more information about DP VOL requirements see the Provisioning Guide for your storage system Procedure 1 In the Explorer pane click Storage Systems expand the storage system tree and then click Pools 2 In...

Page 188: ...mbers and symbols except the following 5 If you want to monitor the task after submitting it select Go to tasks window for status 6 Click Apply to submit the task Managing virtual volumes Editing virtual volume names You can edit a virtual volume s name and you can view information about LDEVs from the Pools window Procedure 1 In the Explorer pane click Storage Systems expand the storage system tr...

Page 189: ...ow select the Virtual Volumes tab 4 In the Virtual Volumes tab from the list of volumes select the check boxes for the V VOLs you want to change and then click More Actions Edit LDEVs Monitoring and maintaining Thin Image 189 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 190: ...Vs window of the Edit LDEVs wizard for LDEV Name enter the prefix and the initial number 190 Monitoring and maintaining Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 191: ...ng V VOLs specified for Thin Image S VOLs Typically you cannot delete V VOLs and V VOL groups that are specified for Thin Image S VOLs If the groups are specified for S VOLs complete this workflow 1 Delete the Thin Image pairs 2 Delete the V VOL Related tasks Deleting Thin Image pairs on page 146 Deleting virtual volumes You can use the Delete LDEVs window to remove virtual volumes Monitoring and ...

Page 192: ...the settings 3 Accept the default task name or enter a unique name You can enter up to 32 letters numbers and symbols except the following 4 If you want to monitor the task after submitting it select Go to tasks window for status 5 Click Apply to submit the task Related tasks Deleting Thin Image pairs on page 146 Viewing snapshot data capacity VSP G1000 G1500 and VSP F1500 You can use the raidcom ...

Page 193: ... CL2 E 0 14 Linux_X86 F_POOLID NONE VOL_ATTR CVS VVOL QS TIER_Alloc_level H TIER 1_Alloc_rate MAX 50 MIN 30 TIER 3_Alloc_rate MAX 50 MIN 30 Snap_Used_Pool MB 2181 For more information about the raidcom command see the Command Control Interface Command Reference Maintaining pairs during storage system maintenance You can maintain pairs when you switch off the storage system power and when you repla...

Page 194: ...lated tasks Recovering blocked pools on page 186 Power supply and losing data in shared memory If you lose power and the data in shared memory is lost the VSP G1000 storage system saves the data to SSD at the time the power supply is switched off but for VSP G200 G400 G600 G800 you must recreate the pools and pairs You can still use the pool and Thin Image pairs with a VSP G1000 storage system bec...

Page 195: ...the volume in which the failure occurs the following volumes are also suspended Cascaded volumes under the volume in which the failure occurred Volumes including their cascade volumes older generationally than the volume in which the failure occurred The following figure illustrates the volumes to be suspended when a failure occurs Monitoring and maintaining Thin Image 195 Hitachi Thin Image User ...

Page 196: ...196 Monitoring and maintaining Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 197: ...uses and solution procedures Troubleshooting pools pairs and volumes related to Thin Image Workflow for fixing errors when SIMs related to cache management devices are reported Workflow for fixing errors when pool related SIMs are reported Completing SIMs VSP G1000 G1500 and VSP F1500 Contacting customer support Troubleshooting Thin Image 197 Hitachi Thin Image User Guide for Hitachi Virtual Stora...

Page 198: ...t of pool VOLs that can be added to a pool see Increasing pool capacity on page 173 Available pool management block in the V VOL management area in the SM is insufficient Pool VOL requirements were not followed Solutions Add pool VOLs to another pool Initialize the V VOL management area Check pool VOL requirements For information about troubleshooting DP pools see the Provisioning Guide for your s...

Page 199: ...op the host application monitoring the volumes 2 Split all of the pairs PSUS status or an unpaired volume see Splitting Thin Image pairs to store snapshot data on page 136 3 Start the monitoring application on the host and check whether the host has access to pair volumes see How Thin Image pair status changes on page 37 A virtual volume cannot be recognized correctly after the host server is boot...

Page 200: ... capacity shown in the Summary section of the Pools window and in the list in the Primary Volumes tab of the selected pool match For more information about viewing the used pool capacity in this section and on this tab see Monitoring pool information on page 170 You cannot resynchronize a suspended HTI pair PSUE status Cause You are attempting to create a blocked and suspended PSUE status pair Sol...

Page 201: ...to the pool usage rate were reported The following figure explains how to take action when 601xxx or 602xxx has occurred Troubleshooting Thin Image 201 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 202: ...202 Troubleshooting Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 203: ...Troubleshooting Thin Image 203 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 204: ...city of LDEVs to be created The insufficient capacity can be reserved by using the available capacity in a parity group of which accelerated compression is enabled When required capacity total capacity of LDEVs to be created To reserve the insufficient capacity add a parity group to create an LDEV and then expand the pool Note that the threshold and the deletion rate used for the calculation are e...

Page 205: ...Troubleshooting Thin Image 205 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 206: ... G1500 and VSP F1500 4 096 For more information about SIM reference codes contact customer support VSP G1000 G1500 and VSP F1500 You can view SIMs that occur in the storage system in an HDvM SN window For more information about checking alerts and the details of a SIM see the System Administrator Guide for your storage system You must reserve enough cache management devices If a warning SIM is iss...

Page 207: ... number of available cache management devices depends on the storage system VSP G200 3 840 VSP G400 G600 or VSP F400 F600 7 936 VSP G800 or VSP F800 32 512 VSP G1000 G1500 and VSP F1500 65 280 Related tasks Viewing the number of cache management devices on page 170 Workflow for fixing errors when pool related SIMs are reported If the pool capacity ensured for writing exceeded the threshold a pool ...

Page 208: ... status For more information about the countermeasures to take when the pool capacity ensured for writing exceeds the threshold and when a pool was blocked see Workflow for correcting pool related failures SIM 601xxx 602xxx 604xxx 605xxx and 606xxx on page 200 For reference code 624000 Complete one of the following Delete unused pools Delete unused Thin Image pairs Delete unused DP VOLs Shrink the...

Page 209: ... For more information about setting the data pool s warning threshold see Creating Thin Image data pools on page 101 For reference code 625000 The usage level of each HDP pool in all of the pools in the storage system falls below the depletion threshold For reference code 626xxx The usage level of each HDP pool number xxx falls below the depletion threshold Note The data pool s depletion threshold...

Page 210: ...erts for SIMs see the System Administrator Guide Contacting customer support If you need to contact customer support you should provide as much information about the problem as possible Please include the following The circumstances surrounding the error or failure The content of any messages displayed on HDvM SN The HDvM SN configuration information use the Dump Tool The service information messa...

Page 211: ... CCI to perform Thin Image tasks by entering commands from a host Pair tasks using CCI or Device Manager Storage Navigator CCI pair command results Troubleshooting with Command Control Interface CCI command reference for Thin Image 211 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 212: ...ot snapshot_data clone raidcom modify snapshot snapshot_data split Normal Copy pairresync Resync Pairs wizard raidcom modify snapshot snapshot_data resync Reverse Copy pairresync restore Resync Pairs wizard raidcom modify snapshot snapshot_data restore Delete pair pairsplit S Delete Pairs window raidcom delete snapshot Assign an S VOL to snapshot data raidcom map snapshot VSP G200 G400 G600 G800 r...

Page 213: ...ommand is rejected and ends abnormally Do not specify noread mode m noread for S VOLs using CCI If you do the command ends normally but the noread mode does not take effect If a CCI command is rejected and ends abnormally and the host is running the HP UX operating system sense bytes SSB are output to the CCI error log file Sense bytes indicate the cause of the error For more information about SSB...

Page 214: ...the error SSB2 CCI command Cause of error 9100 All commands You cannot run the command because the user authentication is not performed 9685 paircreate You cannot create the HTI pair because of a shortage of pair tables 9700 paircreate You cannot create the HTI pair because the pool is not available 9702 paircreate You cannot create the HTI pair because you specified a pool ID different from the p...

Page 215: ...roup for which accelerated compression is enabled These volumes can only be used as the pool volume 9723 All commands VSP G200 The command ended abnormally because shared memory Base is not added VSP G400 G600 G800 and VSP F400 F600 F800 The command ended abnormally because shared memory Extension1 is not added VSP G1000 G1500 and VSP F1500 The command ended abnormally because shared memory 64KLDE...

Page 216: ...he UR pair is not split PSUS status or is suspended and blocked PSUE status 9733 pairresync restore You cannot restore the HTI pair because the HTI P VOL and TC S VOL share a volume 9734 pairresync restore You cannot restore the HTI pair because the HTI P VOL and UR S VOL share a volume 9735 paircreate You cannot create the HTI pair because you specified a UR journal volume as the HTI P VOL 973B A...

Page 217: ...irsplit pairresync pairresync restore The command ended abnormally because the Max LBA size of the volumes you specified as the HTI P VOL and S VOL is different 9753 paircreate pairsplit pairresync pairresync restore The command ended abnormally because the number of slots of the volumes you specified as the HTI P VOL and S VOL is different 9754 paircreate You cannot create the HTI pair because yo...

Page 218: ...he HTI P VOL and an SI P VOL share the volume and the MU number you specified for the HTI pair is already used by the SI pair 9777 paircreate The HTI pair cannot be created because the HTI P VOL and an SI S VOL share the volume and you specified MU number zero 0 for the HTI P VOL 977A paircreate pairsplit The command ended abnormally because the HTI P VOL and an SI P VOL share the volume and the S...

Page 219: ...t pairresync pairresync restore The command ended abnormally because you specified a volume that does not have a path definition as the HTI S VOL 97A1 paircreate If you have reached the maximum number of HTI pairs you cannot create new pairs 97A2 paircreate pairsplit pairresync pairresync restore The command ended abnormally because you specified a volume that uses two mirrors in a three UR data c...

Page 220: ...that uses the same P VOL exists already in the specified snapshot group 97C2 All commands The command ended abnormally because you specified an MU number outside the allowable range 97C4 All commands The command ended abnormally because of one of the following reasons You have specified a pool that is neither an HTI pool nor a DP pool You have specified a pool that does not exist 97C6 paircreate p...

Page 221: ...l active device pair volume The volume is specified reservation attribute of a global active device 97DA paircreate map snapshot The command ended abnormally because the T10 PI settings for the P VOL and S VOL did not match 97DD unmap snapshot replace snapshot The command ended abnormally because you specified a pair to which an S VOL is not assigned 97DE map snapshot unmap snapshot replace snapsh...

Page 222: ...ot snapshot_data create or raidcom modify snapshot snapshot_data clone CCI command might return the error code EX_EWSTOT timeout and terminate abnormally when the status of a pair in a Thin Image consistency group cannot be changed Following are possible reasons why the pair status cannot be changed The Thin Image primary volume is used as a Universal Replicator S VOL and you are reaching the UR j...

Page 223: ...onsistency group while the raidcom modify snapshot snapshot_data create or raidcom modify snapshot snapshot_data clone command is running consistency of snapshot data to be stored or the S VOL in which pairs are cloned cannot be maintained Therefore the raidcom modify snapshot snapshot_data create or raidcom modify snapshot snapshot_data clone command might end abnormally as shown below Timeout mi...

Page 224: ...224 CCI command reference for Thin Image Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 225: ...s window History window Consistency Group Properties window Create TI Pairs wizard Select Pool window Split Pairs wizard Resync Pairs wizard Delete Pairs window Edit Local Replica Options wizard TI Pairs window Assign Secondary Volumes wizard Remove Secondary Volumes window Thin Image GUI windows and wizards 225 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Seri...

Page 226: ...t Thin Image performance on page 121 Opening the window from which you can review the tasks that have been performed on a pair see Viewing Thin Image pair task history on page 167 The following image shows the Replication window with the summary section at the top of the window and the Replica LDEVs tab at the bottom Summary This section is the table at the top of the Replication window that shows...

Page 227: ...mote Replication Click to open the View History window for remote replication Edit Options Local Replication Click to open the Edit Local Replica Options wizard Edit Options Remote Replication Click to open the Edit Remote Replica Options wizard For more information about using this wizard to set the number of volumes path blockade and other options see the Hitachi TrueCopy User Guide Edit Options...

Page 228: ...rmat of virtual emulation type number of virtual LUSE volumes and virtual CVS attribute Each of these three items is displayed only if it is specified If none of them are specified a blank is displayed SSID The virtual SSID of the volume If no virtual SSID is specified a blank is displayed Export button Click to open a dialog from which you can download table information to a file These items are ...

Page 229: ... limit in your storage system SI MF Volume Migration V2 VSP G1000 G1500 and VSP F1500 The number of SI SIz and Volume Migration V2 pair tables in use and the SI SIz and Volume Migration V2 pair table limit in your storage system TI The number of HTI pair tables in use and the HTI pair table limit in your storage system Number of Differential Tables The number of differential tables that are in use...

Page 230: ...B VSP G400 G600 G800 20 TB VSP G1000 G1500 and VSP F1500 128 TB Note This value does not guarantee that the HTI pairs of the indicated capacity have been successfully created SI Pairs tab This tab only shows SI pairs to which you are allocated the P VOL or the S VOLs The following image shows this tab on the Local Replication window The following table lists the items on this tab 230 Thin Image GU...

Page 231: ...Fx00 models only The P VOL s attribute Capacity The P VOL s capacity CLPR The P VOL s CLPR ID Encryption The P VOL s encryption information Enabled Encryption is enabled for the parity group to which the P VOL s LDEV belongs or a V VOL is associated with a pool in which a pool volume has encryption enabled Disabled Encryption is disabled for the parity group to which the P VOL s LDEV belongs or a ...

Page 232: ...al SSID is specified a blank is displayed Copy Type The SI volume s copy type Values SI L1 SI L1 pair SI L2 SI L2 pair SIMF SIz pair Status The SI pair status The following icons and pair statuses are shown The SI pair is in the process of being deleted Status SI SMPL PD SIz Deleting TRANS This icon is used for the following You are copying the pair Status SI COPY PD COPY SIz PENDING You are resyn...

Page 233: ...000 G1500 and VSP F1500 SI only For SIz a hyphen is displayed LUN ID The LUN identification number of the S VOL LDEV s LUN path If the path is not defined a blank is displayed VSP G1000 G1500 and VSP F1500 SI only For SIz a hyphen is displayed Provisioning Type The S VOL s provisioning type Basic Internal volume DP DP VOL External External volume Emulation Type VSP G1000 G1500 and VSP F1500 The S ...

Page 234: ... displayed only if it is specified If none of them are specified a blank is displayed Virtual SSID The virtual SSID of the S VOL If no virtual SSID is specified a blank is displayed Copy Pace The speed at which the SI S VOL is copied Values Faster Medium or Slower CTG ID The identifier of the consistency group to which the SI pair is assigned Mirror Unit The SI pair s mirror unit number Topology I...

Page 235: ...s to a table using this window see the System Administrator Guide TI Root Volumes tab This tab shows only Thin Image pairs that have P VOLs to which you are allocated The following image shows this tab in the Local Replication window Thin Image GUI windows and wizards 235 Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 236: ...d Encryption is enabled for the parity group to which the P VOL s LDEV belongs or a V VOL is associated with a pool in which a pool volume has encryption enabled Disabled Encryption is disabled for the parity group to which the P VOL s LDEV belongs or a V VOL is associated with a pool in which a pool volume has encryption disabled Mixed The pool to which the P VOL s LDEV belongs contains two or mo...

Page 237: ... them are specified a blank is displayed SSID The virtual SSID of the P VOL If no virtual SSID is specified a blank is displayed Create TI Pairs button Click to open the Create TI Pairs window Operate TI Pairs button Click to open the Operate TI Pairs window View Pair Synchronization Rate button Click to open the View Pair Synchronization Rate window More Actions Click to view a list of tasks you ...

Page 238: ...nager TI Used HTI is using the consistency group Mainframe Reserved VSP G1000 G1500 and VSP F1500 The consistency group is reserved for PPRC or Business Continuity Manager Free The consistency group is not being used and is not reserved Changing The status is in the process of changing Number of Pairs The number of pairs assigned to the consistency group for each local replication software applica...

Page 239: ...zation Rate window More Actions Click to view a list of tasks you can perform Options Split Pairs Click to open the Split Pairs window Resync Pairs Click to open the Resync Pairs window Assign Secondary Volumes Click to open the Assign Secondary Volumes window Remove Secondary Volumes Click to open the Remove Secondary Volumes window Delete Pairs Click to open the Delete Pairs window Export Click ...

Page 240: ... of the P VOL s virtual device in a combined format of virtual emulation type number of virtual LUSE volumes and virtual CVS attribute Each of these three items is displayed only if it is specified If none of them are specified a blank is displayed Virtual SSID The virtual SSID of the P VOL If no virtual SSID is specified a blank is displayed Copy Type The SI volume s copy type Values SI L1 SI L1 ...

Page 241: ...TRANS a hyphen is displayed For Thin Image pairs where the cascade attribute is disabled the rate at which the Thin Image S VOL matches the next new generation of the S VOL If the S VOL is the latest one the storage system computes the synchronization rate by comparing the S VOL with the P VOL For Thin Image pairs where the cascade attribute is enabled the following information is displayed depend...

Page 242: ...ted Enabled Cascaded pairs can be created Disabled Cascaded pairs cannot be created A hyphen is displayed for non HTI pairs Type The pair type Snapshot A pair with the snapshot attribute Clone A pair with the clone attribute A hyphen is displayed for non HTI pairs Topology ID The topology ID which indicates the layer of the pair based on the mirror unit The topology ID consists of the LDEV ID of t...

Page 243: ...cryption information Enabled A pool was created by the pool volume for which encryption is enabled Disabled A pool was created by the pool volume for which encryption is disabled Mixed A pool contains two or more of the following Volume for which encryption is enabled Volume for which encryption is disabled External volume Note Data encryption is not ensured in an LDEV with Mixed encryption status...

Page 244: ...g table lists the items in this table Item Description Primary Volume The P VOL information Values LDEV ID The P VOL s LDEV identification number LDEV Name The P VOL s LDEV name Provisioning Type The P VOL s provisioning type Basic Internal volume DP DP VOL External External volume Attribute VSP Gx00 models and VSP Fx00 models only The P VOL s attribute Emulation Type VSP G1000 G1500 and VSP F1500...

Page 245: ...l SSID The virtual SSID of the P VOL If no virtual SSID is specified a blank is displayed Snapshot Group The snapshot group name Information is displayed for this item only if you have configured a snapshot group for the HTI pair Status The pair status For more information about HTI pair status see Thin Image pair status definitions on page 160 Snapshot Date The date and time you created the pair ...

Page 246: ...ten to when its pair status is V Split SUSPVS or Split SUSPOP Protect is displayed if Protect is set from Business Continuity Manager when S VOL s pair status is Split SUSPOP SP Pend TRANS or V Split SUSPVS A hyphen is displayed when the S VOL has not been written to and Protect is not set T10 PI The S VOL s T10 PI attribute information Enabled The S VOL s T10 PI attribute is enabled Disabled The ...

Page 247: ...on HTI pairs Topology ID The topology ID which indicates the layer of the pair based on the mirror unit The topology ID consists of the LDEV ID of the volume root volume for Thin Image pairs and the mirror unit number History window Use this window to view Thin Image pair task history The following image shows this window Setting fields The following table lists the items on the History window Thi...

Page 248: ... type Basic Internal volume DP DP VOL External External volume Secondary Volume The S VOL information LDEV ID The S VOL s LDEV identification number Provisioning Type The S VOL s provisioning type DP DP VOL Snapshot Thin Image volume Mirror Unit The mirror unit number Pool ID The pool identification number Description Code The code for the type of task you performed Description The description of ...

Page 249: ...ing the group with CCI SIMF Used PPRC BCM VSP G1000 G1500 and VSP F1500 SIz is using the consistency group and you are managing the group with PPRC or Business Continuity Manager TI Used HTI is using the consistency group Mainframe Reserved VSP G1000 G1500 and VSP F1500 The consistency group is reserved for PPRC or Business Continuity Manager Free The consistency group is not being used and is not...

Page 250: ...n a combined format of virtual emulation type number of virtual LUSE volumes and virtual CVS attribute Each of these three items is displayed only if it is specified If none of them are specified a blank is displayed Virtual SSID The virtual SSID of the P VOL If no virtual SSID is specified a blank is displayed Copy Type The volume s copy type Values TI HTI pair Snapshot Group The snapshot group n...

Page 251: ...rs can be created Disabled Cascaded pairs cannot be created A hyphen displays for non HTI pairs Type The pair type Snapshot A pair with the snapshot attribute Clone A pair with the clone attribute A hyphen displays for non HTI pairs Topology ID The topology ID which indicates the layer of the pair based on the mirror unit The topology ID consists of the LDEV ID of the volume root volume for HTI pa...

Page 252: ...oot volume The Available Primary Volumes table lists LDEVs which are not paired and S VOLs of the cascaded pairs with the clone attribute No Create a pair using the P VOL of a created pair The Available Primary Volumes table lists P VOLs of created pairs and S VOLs of created cascaded pairs Select By Specify whether to specify LUN to create a pair LUN Specify LUN and then select an LDEV to create ...

Page 253: ...I target alias This item is displayed if you select LUN for Select By and an iSCSI port for Port ID Default Any Cascade Select to enable or disable creation of cascaded pairs Enable Cascaded pairs can be created Disable Cascaded pairs cannot be created Pair Type Select the pair type Snapshot Creates a pair with the snapshot attribute Clone Creates a pair with the clone attribute This item is avail...

Page 254: ...volume You can select this option if you select Create New in Snapshot Group All When you select Create New in Snapshot Group creates a new snapshot group and adds all snapshot data to it When you select Use Existing in Snapshot Group adds all snapshot data to an existing snapshot group Prefix The fixed character prefix of the snapshot group Initial number The initial number of the snapshot group ...

Page 255: ...e LDEV s LUN path This item is displayed if you select LUN for Select By VSP G1000 G1500 and VSP F1500 Provisioning Type The LDEV s provisioning type Values Basic Internal volume DP DP VOL External External volume ALU ALU attribute volume Attribute The LDEV s attribute Values ALU ALU attribute volume SLU SLU attribute volume Data Direct Mapping Data Direct Mapping attribute volume VSP Gx00 models ...

Page 256: ...is disabled Number of Snapshot Data The number of snapshot data to which the LDEV belongs Cascade Indicates whether a cascaded pair can be created Enabled Cascaded pairs can be created Disabled Cascaded pairs cannot be created TI Pair Position Indicates that the volume is the P VOL or S VOL of the pair TI Pair Topology ID The topology ID which indicates the layer of the pair based on the mirror un...

Page 257: ...e does not have any attribute specified a hyphen is displayed Capacity The capacity of the LDEV Encryption The LDEV s encryption information Enabled Encryption is enabled for the parity group to which the LDEV belongs or a V VOL is associated with a pool in which a pool volume has encryption enabled Disabled Encryption is disabled for the parity group to which the LDEV belongs or a V VOL is associ...

Page 258: ...ted by the pool volume for which encryption is disabled Mixed A pool contains two or more of the following Volume for which encryption is enabled Volume for which encryption is disabled External volume Note Data encryption is not ensured in an LDEV with Mixed encryption status For pools created in external volumes or blocked pools a hyphen is displayed Cascade VSP G1000 G1500 and VSP F1500 Indicat...

Page 259: ...ters LDEVs in the Available LDEVs table by the Port ID This item is displayed if you select LUN for Select By Host Group Name Used to filter LDEVs to display in the Available Primary Volumes table This item is displayed if you select LUN for Select By Default Any Set button Click to move an LDEV that you have selected in the Available LDEVs table to the Selected Pairs table You can also click to c...

Page 260: ... By Capacity The LDEV s capacity CLPR The LDEV s CLPR ID Encryption Encryption information Enabled Encryption is enabled for the parity group to which P VOL s LDEV belongs or a V VOL is associated with a pool in which a pool volume has encryption enabled Disabled Encryption is disabled for the parity group to which P VOL s LDEV belongs or a V VOL is associated with a pool in which a pool volume ha...

Page 261: ...ation Values LDEV ID The P VOL s LDEV identification number LDEV Name The P VOL s LDEV name If you have not allocated an LDEV to the S VOL for an existing pair a hyphen is displayed Port ID The port name of the P VOL LDEV s LUN path Host Group Name iSCSI Target Alias The host group name and ID or iSCSI target alias and ID of the P VOL LDEV s LUN path iSCSI Target Name The P VOL s iSCSI target name...

Page 262: ...DEVs with the Enabled or Disabled status If the LDEV is an external volume or migration volume a hyphen is displayed For DP VOLs the pool to which an LDEV belongs is an external volume or blocked Capacity Saving Information about the P VOL s capacity saving function Compression The compression function is used Deduplication and Compression The deduplication function and the compression function ar...

Page 263: ... VOLs the pool to which an LDEV belongs is an external volume or blocked Capacity Saving Information about the S VOL s capacity saving function Compression The compression function is used Deduplication and Compression The deduplication function and the compression function are used Disabled The capacity saving function is not used T10 PI The S VOL s T10 PI attribute information Enabled The S VOL ...

Page 264: ...Capacity The P VOL s capacity CLPR The P VOL s CLPR ID Encryption P VOL s encryption information Enabled Encryption is enabled for the parity group to which P VOL s LDEV belongs or the P VOL is a V VOL associated with a pool in which a pool volume has encryption enabled Disabled Encryption is disabled for the parity group to which P VOL s LDEV belongs or the P VOL is a V VOL associated with a pool...

Page 265: ...th Host Group Name iSCSI Target Alias The host group name of the S VOL LDEV s LUN path iSCSI Target Name The S VOL s iSCSI target name LUN ID The LUN identification number of the S VOL LDEV s LUN path Attribute VSP Gx00 models and VSP Fx00 models only The S VOL s attribute Capacity The S VOL s capacity CLPR The S VOL s CLPR ID Encryption S VOL s encryption information Enabled Encryption is enabled...

Page 266: ...ncryption status For pools created in external volumes blocked pools and non HTI pairs a hyphen is displayed Cascade Indicates whether a cascaded pair can be created Enabled Cascaded pairs can be created Disabled Cascaded pairs cannot be created Topology ID The topology ID which indicates the layer of the pair based on the mirror unit The topology ID consists of the LDEV ID of the root volume and ...

Page 267: ...ute Capacity The P VOL s capacity CLPR The P VOL s CLPR ID Pool Name ID The pool name and identification number Mirror Unit The mirror unit number A hyphen is displayed if the volume is not an S VOL of an existing pair Cascade Indicates whether a cascaded pair can be created Enabled Cascaded pairs can be created Disabled Cascaded pairs cannot be created Type The pair type Snapshot A pair with the ...

Page 268: ...ol the capacity available for writing data might be less than the displayed capacity Used The amount of pool capacity that is used Used The percentage of pool capacity that is use Note This number is truncated to an integer Drive Type RPM The data drive type and RPM For more information about data drive type see Pool creation and data drive type priority on page 106 Encryption The pool s encryptio...

Page 269: ...volumes currently associated with a pool and the maximum number of virtual volumes that can be associated with the pool For a pool with the Data Direct Mapping attribute is shown for the maximum number of virtual volumes that can be associated with the pool Number of Root VOLs Indicates the number of root volumes for a Thin Image pair When there are no volumes to be counted is shown Detail button ...

Page 270: ...dels only The P VOL s attribute Capacity The P VOL s capacity CLPR The P VOL s CLPR ID Copy Type The volume s copy type Values TI HTI pair Snapshot Group The snapshot group name Information is displayed for this item only if you have configured a snapshot group for the HTI pair Status The pair status For more information see Thin Image pair status definitions on page 160 Secondary Volume The S VOL...

Page 271: ... mirror unit The topology ID consists of the LDEV ID of the root volume and the mirror unit number Split Type The mode in which you want to split the selected pairs Values Quick Split The pair is split and then remaining differential data is copied to the S VOL in the background Specify this value when you want to write to or read from the S VOL immediately after splitting a pair Steady Split The ...

Page 272: ...apshot Group The snapshot group name Information is displayed for this item only if you have configured a snapshot group for the HTI pair Status The pair status For more information see Thin Image pair status definitions on page 160 Split Type The split type Values Quick Split The pair is split and then remaining differential data is copied to the S VOL in the background Specify this value when yo...

Page 273: ...ed Enabled Cascaded pairs can be created Disabled Cascaded pairs cannot be created A hyphen displays for non HTI pairs Type The pair type Snapshot A snapshot pair Clone A cloned pair A hyphen displays for non HTI pairs Topology ID The topology ID which indicates the layer of the pair based on the mirror unit The topology ID consists of the LDEV ID of the root volume and the mirror unit number Resy...

Page 274: ...pacity The P VOL s capacity CLPR The P VOL s CLPR ID Copy Type The volume s copy type Values TI HTI pair Snapshot Group The snapshot group name Information is displayed for this item only if you have configured a snapshot group for the HTI pair Status The pair status For more information see Thin Image pair status definitions on page 160 Snapshot Date The date and time that you created the pair to...

Page 275: ...pairs Topology ID The topology ID which indicates the layer of the pair based on the mirror unit The topology ID consists of the LDEV ID of the root volume and the mirror unit number Resync Type The type of resynchronization Values Normal Copy Primary Secondary A full forward resynchronization of data from the P VOL to the S VOL Reverse Copy Secondary Primary A full restoration of P VOL data from ...

Page 276: ... volume s copy type Values TI HTI pair Snapshot Group The snapshot group name Information is displayed for this item only if you have configured a snapshot group for the HTI pair Status The pair status For more information see Thin Image pair status definitions on page 160 Resync Type The type of resynchronization Values Normal Copy Primary Secondary A full forward resynchronization of data from t...

Page 277: ...er Mirror Unit The mirror unit number Cascade Indicates whether a cascaded pair can be created Enabled Cascaded pairs can be created Disabled Cascaded pairs cannot be created A hyphen displays for non HTI pairs Type The pair type Snapshot A pair with the snapshot attribute Clone A pair with the clone attribute A hyphen displays for non HTI pairs Topology ID The topology ID which indicates the laye...

Page 278: ...ty The P VOL s capacity CLPR The P VOL s CLPR ID Copy Type The volume s copy type Values TI HTI pair Snapshot Group The snapshot group name Information is displayed for this item only if you have configured a snapshot group for the HTI pair Status The pair status For more information see Thin Image pair status definitions on page 160 Snapshot Date The date and time that you created the pair to sto...

Page 279: ... the snapshot attribute Clone A pair with the clone attribute A hyphen displays for non HTI pairs Topology ID The topology ID which indicates the layer of the pair based on the mirror unit The topology ID consists of the LDEV ID of the root volume and the mirror unit number Related concepts Deleting Thin Image pairs on page 146 Edit Local Replica Options wizard Use this wizard to set the system op...

Page 280: ...ndow of the Edit Local Replica Options wizard Item Description System Type The storage system type Values Open Select when you want to change system options that affect SI and HTI performance 280 Thin Image GUI windows and wizards Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 281: ...erver This item is available to all pairs in PAIR status The order of Copy Pace Ext Slower1 Copy Pace Ext Slower2 and Copy Pace Ext None determines the host server s I O performance Quick Steady Split Multiplexing ShadowImage ShadowImage for Mainframe 24 Accelerates ShadowImage pair split The multiplicity the number of jobs for which copy processing can be executed concurrently of copy processing ...

Page 282: ...ource storage systems during data migration FC Ext Slower Copy1 17 Inhibits background copy and improves host I O response when the operating ratio of the MP blade FCv2 or FCSE S VOL or T VOL is allocated exceeds 65 FC Ext Slower Copy2 18 Inhibits background copy and improves host I O response when the operating ratio of the MP blade FCv2 or FCSE S VOL or T VOL is allocated exceeds 50 Copy Pace Ex...

Page 283: ... executed concurrently of copy processing for each pair is changed from 1 to 24 Status Shows whether the option is currently enabled or disabled Enable button Click to enable the selected option Disable button Click to disable the selected option Edit Local Replica Options confirmation window This window is the second and last window of the Edit Local Replica Options wizard The following image sho...

Page 284: ...nfirm window of the Edit Local Replica Options wizard Item Description System Option Options that can be changed Status Shows whether the option is currently enabled or disabled 284 Thin Image GUI windows and wizards Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 285: ... iSCSI target name If the LUN path is not defined a blank is displayed LUN ID The LUN identification number of the P VOL LDEV s LUN path If the path is not defined a blank is displayed Provisioning Type The P VOL s provisioning type Basic Internal volume DP DP VOL External External volume Attribute VSP Gx00 models and VSP Fx00 models only The P VOL s attribute Capacity The P VOL s capacity CLPR Th...

Page 286: ...LDEV ID The identification number of the P VOL s virtual LDEV Virtual Device Name The name of the P VOL s virtual device in a combined format of virtual emulation type number of virtual LUSE volumes and virtual CVS attribute Each of these three items is displayed only if it is specified If none of them are specified a blank is displayed Virtual SSID The virtual SSID of the P VOL If no virtual SSID...

Page 287: ...splayed For DP VOLs the pool to which an LDEV belongs is an external volume or blocked Capacity Saving Information about the S VOL s capacity saving function Compression The compression function is used Deduplication and Compression The deduplication function and the compression function are used Disabled The capacity saving function is not used T10 PI The P VOL s T10 PI attribute information Enab...

Page 288: ...umber Layer The layer of the pair based on the root volume Create TI Pairs button Click to open the Create TI Pairs window Split Pairs button Click to open the Split Pairs window Resync Pairs button Click to open the Resync Pairs window More Actions Click to view a list of tasks you can perform Options Assign Secondary Volumes Click to open the Assign Secondary Volumes window Remove Secondary Volu...

Page 289: ...s table by the specified object Selection Object Filters LDEVs in the Available LDEVs table according to port type Port ID Filters LDEVs in the Available LDEVs table by the Port ID This item is displayed if you select LUN for Select By Host Group Name Filters LDEVs in the Available LDEVs table by the Host Group Name This item is displayed if you select LUN for Select By Default Any Set button Clic...

Page 290: ... This item is displayed if you select LUN for Select By LUN ID The LUN identification number of the LDEV s LUN path This item is displayed if you select LUN for Select By Capacity The LDEV s capacity CLPR The LDEV s CLPR ID Capacity Saving Information about the LDEV s capacity saving function Compression The compression function is used Deduplication and Compression The deduplication function and ...

Page 291: ...isting pair Selected Pairs table The following table lists the items in the Selected Pairs table of the Assign Secondary Volumes window Item Description Primary Volume The P VOL information Values LDEV ID The P VOL s LDEV identification number LDEV Name The P VOL s LDEV name If you have not allocated an LDEV to the S VOL a hyphen is displayed Port ID The port name of the P VOL LDEV s LUN path Host...

Page 292: ...arget alias and ID of the S VOL LDEV s LUN path iSCSI Target Name The S VOL s iSCSI target name LUN ID The LUN identification number of the S VOL LDEV s LUN path Attribute VSP Gx00 models VSP Fx00 models only The S VOL s attribute Capacity The S VOL s capacity CLPR The S VOL s CLPR ID Capacity Saving Information about the S VOL s capacity saving function Compression The compression function is use...

Page 293: ... Port ID The port name of the P VOL LDEV s LUN path Host Group Name iSCSI Target Alias The host group name and ID or iSCSI target alias and ID of the P VOL LDEV s LUN path iSCSI Target Name The P VOL s iSCSI target name LUN ID The LUN identification number of the P VOL LDEV s LUN path Attribute VSP Gx00 models and VSP Fx00 models only The P VOL s attribute Capacity The P VOL s capacity CLPR The P ...

Page 294: ... path iSCSI Target Name The S VOL s iSCSI target name LUN ID The LUN identification number of the S VOL LDEV s LUN path Attribute VSP Gx00 models and VSP Fx00 models only The S VOL s attribute Capacity The S VOL s capacity CLPR The S VOL s CLPR ID Capacity Saving Information about the S VOL s capacity saving function Compression The compression function is used Deduplication and Compression The de...

Page 295: ...tus definitions on page 160 Snapshot Date The date and time that you created the pair to store snapshot data Primary Volume The P VOL information Values LDEV ID The P VOL s LDEV identification number LDEV Name The P VOL s LDEV name If you have not allocated an LDEV to the S VOL a hyphen is displayed Attribute VSP Gx00 models and VSP Fx00 models only The P VOL s attribute Capacity The P VOL s capac...

Page 296: ... name Attribute VSP Gx00 models and VSP Fx00 models The LDEV s attribute Capacity The LDEV s capacity CLPR The LDEV s CLPR ID Snapshot Group The snapshot group name Information is displayed for this item only if you have configured a snapshot group for the HTI pair Status The pair status For more information about pair status see Thin Image pair status definitions on page 160 296 Thin Image GUI wi...

Page 297: ...ber A hyphen is displayed if the volume is not an S VOL of an existing pair Cascade Indicates whether a cascaded pair can be created Enabled Cascaded pairs can be created Disabled Cascaded pairs cannot be created Pair Topology ID The topology ID which indicates the layer of the pair based on the mirror unit The pair topology ID consists of the LDEV ID of the root volume and the mirror unit number ...

Page 298: ...298 Thin Image GUI windows and wizards Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 299: ...d for the conglomerate LUN structure a SCSI architecture model In the conglomerate LUN structure all host access is through the ALU which functions as a gateway to sort the I Os for the subsidiary logical units SLUs grouped under the ALU The host requests I Os by using SCSI commands to specify the ALU and the SLUs grouped under the ALU An ALU is called a Protocol Endpoint PE in vSphere See also su...

Page 300: ...ond layer are called cascaded pairs cascade function A ShadowImage function that allows a primary volume P VOL to have up to nine secondary volumes S VOLs in a layered configuration The first cascade layer L1 is the original ShadowImage pair with one P VOL and up to three S VOLs The second cascade layer L2 contains ShadowImage pairs in which the L1 S VOLs are functioning as the P VOLs of layer 2 S...

Page 301: ...nging to the CTG while keeping data consistency copy pair A pair of volumes in which one volume contains original data and the other volume contains the copy of the original Copy operations can be synchronous or asynchronous and the volumes of the copy pair can be located in the same storage system local copy or in different storage systems remote copy A copy pair can also be called a volume pair ...

Page 302: ...differential data stored at an intermediate site device A physical or logical unit with a specific function device emulation Indicates the type of logical volume Mainframe device emulation types provide logical volumes of fixed size called logical volume images LVIs which contain EBCDIC data in CKD format Typical mainframe device emulation types include 3390 9 and 3390 M Open systems device emulat...

Page 303: ...d by Dynamic Provisioning DRU Hitachi Data Retention Utility Dynamic Provisioning HDP An approach to managing storage Instead of reserving a fixed amount of storage it removes capacity from the available pool when data is actually written to disk E emulation The operation of a storage system to emulate the characteristics of a different storage system For device emulation the mainframe host recogn...

Page 304: ...vailable for use by the host systems G GUI graphical user interface H HDP Hitachi Dynamic Provisioning See Dynamic Provisioning HDS Hitachi Data Systems HDT Hitachi Dynamic Tiering HORC Hitachi Open Remote Copy Another name for Hitachi TrueCopy HORCM Hitachi Open Remote Copy Manager Another name for Command Control Interface 304 Glossary Hitachi Thin Image User Guide for Hitachi Virtual Storage Pl...

Page 305: ...of logical volumes that are stored and managed as virtual volumes V VOLs See also remote replication initial copy An initial copy operation is performed when a copy pair is created Data on the primary volume is copied to the secondary volume before any updates are processed intermediate site I site A site that functions as both a TrueCopy secondary site and a Universal Replicator primary site in a...

Page 306: ...r L2 pair See layer 2 L2 pair layer 1 L1 pair In a ShadowImage cascade configuration a layer 1 pair consists of a primary volume and secondary volume in the first cascade layer You can pair an L1 primary volume with up to three L1 secondary volumes See also cascade configuration layer 2 L2 pair In a ShadowImage cascade configuration a layer 2 L2 pair consists of a primary volume and secondary volu...

Page 307: ... called a logical volume image LVI An LDEV formatted for use by open system hosts is called a logical unit LU logical disk controller LDKC A group of 255 control unit CU images in the RAID storage system that is controlled by a virtual logical storage system within the single physical storage system For example the Hitachi Universal Storage Platform V storage system supports two LDKCs LDKC 00 and ...

Page 308: ...imes larger than a fixed size OPEN x LU LUSE lets the host access the data on the storage system using fewer LU numbers LV logical volume See volume M main control unit MCU A storage system at a primary or main site that contains primary volumes of remote replication pairs The main control unit MCU is configured to send remote I O instructions to one or more storage systems at the secondary or rem...

Page 309: ...tifies individual pair relationships between journal groups modify mode The mode of operation of Device Manager Storage Navigator that allows changes to the storage system configuration See also view mode MP microprocessor MU mirror unit N node volume A layer 2 primary volume in a ShadowImage cascade configuration The secondary volume of a layer 2 pair is called a leaf volume See also cascade conf...

Page 310: ...erations can be synchronous or asynchronous and the pair volumes can be located in the same storage system in system replication or in different storage systems remote replication pair status Indicates the condition of a copy pair A pair must have a specific status for specific operations When a pair operation completes the status of the pair changes to a different status determined by the type of...

Page 311: ...he host on which the production applications are running and the secondary site is the location of the host on which the backup applications that run when the applications at the primary site have failed primary volume P VOL The volume in a copy pair that contains the original data to be replicated The data on the P VOL is duplicated synchronously or asynchronously on the secondary volume S VOL Th...

Page 312: ...RAID group A redundant array of inexpensive drives RAID that have the same capacity and are treated as one group for data storage and recovery A RAID group contains both user data and parity information which allows the user data to be accessed in the event that one or more of the drives within the RAID group are not available The RAID level of a RAID group determines the number of data drives and...

Page 313: ...rimary volume in a ShadowImage cascade configuration The secondary volume of a layer 1 pair is called a node volume See also cascade configuration RTC real time clock RTO recovery time objective S S serial number S VOL See secondary volume or source volume When used for secondary volume S VOL is only seen in the earlier version of the Device Manager Storage Navigator GUI still in use S N serial nu...

Page 314: ...nected to the storage system at the primary site via remote copy connections The secondary site can also be called the remote site See also primary site secondary volume S VOL The volume in a copy pair that is the copy of the original data on the primary volume P VOL The following Hitachi products use the term secondary volume Thin Image Copy on Write Snapshot ShadowImage TrueCopy Universal Replic...

Page 315: ...file An area of cache memory that is used to store updated data for later integration into the copied data SIM service information message Simple Network Management Protocol SNMP An industry standard protocol that is used to manage and monitor network attached devices for conditions that warrant administrative attention The devices can include disk devices routers and hubs SNMP uses Simple Gateway...

Page 316: ... capacity of a data drive for example hard disk drive flash drive SS snapshot SSB sense byte SSD solid state drive Also called flash drive SSID See storage subsystem identifier storage subsystem identifier SSID In a mainframe environment SSIDs are used for reporting information from the control unit CU image to the mainframe operating system An SSID is assigned to each group of 64 or 256 volumes t...

Page 317: ... combining T10 PI with Data Integrity Extension DIX which enables data protection covering application and operating system data protection from application to disk drives can be provided target volume T VOL The volume in a mainframe copy pair that is the copy of the original data on the source volume S VOL The term is used only in the earlier version of the Device Manager Storage Navigator GUI st...

Page 318: ...nframe record format V VOL See virtual volume V VOL management area Contains the pool management block and pool association information for Dynamic Provisioning Dynamic Provisioning for Mainframe Dynamic Tiering and Dynamic Tiering for Mainframe and Thin Image operations The V VOL management area is created automatically when additional shared memory is installed VB variable length and blocking ma...

Page 319: ...vol volume VOL or vol A logical device LDEV or a set of concatenated LDEVs in the case of LUSE that has been defined to one or more hosts as a single data storage unit An open systems volume is called a logical unit LU and a mainframe volume is called a logical volume image LVI volume pair See copy pair W write order The order of write I Os to the primary volume P VOL of a copy pair The data on th...

Page 320: ...320 Glossary Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 321: ...d device 120 completing SIMs for pool problems 209 completing SIMS 209 components 18 configuring 99 consistency groups 20 requirements 74 copy threshold option 41 COW 35 creating data pools 101 LDEVs 113 pools 101 D data pools creating 101 requirements 73 definitions pair status 160 deleting pools 187 snapshot data 144 V VOLs 191 virtual volumes 191 differences ShadowImage 96 Thin Image 96 E editi...

Page 322: ...age 27 rebalancing usage 27 performance copy threshold option 41 host server I O 41 planning requirements 67 pool usable capacity 172 pool usage SIMs 201 pool volumes relationship to pools 26 selecting 104 pool related failures 200 pools changing pool names 183 changing names 183 creating 101 deleting 187 editing the pool threshold 181 increasing capacity 173 monitoring 170 recovering from blocks ...

Page 323: ...a 35 switching off storage system power 193 synchronization viewing rates 161 system requirements 67 68 T Thin Image differences 96 pairs 18 snapshot tree components 20 volume components 19 thresholds data pool warning 181 troubleshooting 197 with CCI 213 U uninstalling 68 V V VOLs deleting 191 how used 28 registering 107 releasing 28 viewing pair properties 160 pair task history 167 virtual volum...

Page 324: ...324 Index Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 325: ...Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series ...

Page 326: ...rnia 95050 2639 U S A www hds com Regional Contact Information Americas 1 408 970 1000 info hds com Europe Middle East and Africa 44 0 1753 618000 info emea hds com Asia Pacific 852 3189 7900 hds marketing apac hds com Contact Us www hds com en us contact html MK 92RD8011 12 June 2017 ...

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