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Chapter 3 Replication Management

[Differential Quantity of Volume/Transfer Rate]

Displays the amount of difference and transfer rate during copy operation.

The unit of the amount of difference is variable (e.g. KB, MB, GB), and the unit of transfer rate is fixed

(MB/S).

Example of Display (Replicate)

Amount of Difference

Transfer Rate

When Replication is complete (Amount of Difference=0), Amount of Difference and Transfer Rate

(MB/S) disappears.

[Volume Color]

The Volume Color changes by layer and it becomes the layer color immediately after setting the pair or

when Separate has completed.

When volume colors of the pair match, it indicates synchronization.

Layer color

(i) PV:

Yellowish

green

(ii) 1st Layer:

Light blue

(iii) 2nd

Layer: Blue

(iv) 3rd

Layer: Yellow

Example of Display

Yellowish green

Light blue

Blue

Yellow

1st Layer

2nd Layer

3rd Layer

After Replicate is

complete

Summary of Contents for Storage Manager IS015-9E

Page 1: ...NEC Storage Manager Data Replication User s Manual Function Guide IS015 9E ...

Page 2: ...poration 2001 2004 No part of the contents of this book may be reproduced or transmitted in any form without permission of NEC Corporation The contents of this book may be modified without notice in the future ...

Page 3: ...EC Storage BaseProduct Ver3 3 NEC Storage ReplicationControl Ver3 3 3 The NEC Storage Manager is referred to as iSM or Storage Manager in the text of this manual Also the NEC Storage series disk array subsystem is referred to as a disk array 4 The following descriptions in the text of this manual refer to the corresponding products 5 The following descriptions in the text of this manual refer to t...

Page 4: ...rporation in the United States and other countries Legato NetWorker is a registered trademark of Legato Systems Inc in the United States Sun is a registered trademark of Sun Microsystems Inc in the United States and other countries Solaris is a trademark or a registered trademark of Sun Microsystems Inc in the United States and other countries Linux is a trademark or registered trademark of Mr Lin...

Page 5: ... 3 4 Activity State and Synchronous State 16 2 4 Copy Control State 17 2 5 Relationship between Copy Performance and Copy Control State 19 2 6 RV Access Restriction 20 2 7 Copy Faults and State Transitions 21 2 8 Freeze of Disk Arrays 22 Chapter 3 Replication Management 23 3 1 Replication Management Overview 23 3 1 1 Operations and Authorization Levels 23 3 1 2 Event Detection and Operation Messag...

Page 6: ...play Link Properties 98 3 3 20 Display Copy Fault List 101 Chapter 4 Functions of ReplicationControl 103 4 1 Command List 104 4 2 Operation Types 105 4 2 1 Direct Operation for a Disk Array 106 4 2 2 Operations Linked with iSM 109 4 3 Volume Types 111 4 4 Replication Operation File 112 4 5 Volume List Creation Display 113 4 5 1 Command Operations Windows 113 4 5 2 Command Operations UNIX 119 4 5 3...

Page 7: ...ay Operations 178 4 8 1 Command for Displaying Information on the Replication Function 178 4 9 Disk Operations 181 4 9 1 File System Flush Command 181 4 9 2 Volume Mount Command 183 4 9 3 Volume Unmount Command 185 4 9 4 Disk Signature Operation Command 187 4 9 5 Devices Scan Command 189 Index 190 ...

Page 8: ...iv This page is intentionally left blank ...

Page 9: ...at creates Replication Volumes RV of a business volume called Master Volume MV in the data replication It is installed in the disk array Replication volumes can be connected to or separated from the master volume at any time Operations such as connection and separation can be instructed from the business server and the iSM Client e g Windows system The following two methods are provided to create ...

Page 10: ... reference tasks In this way Data Replication makes system construction and system management easier and more effective The following sections illustrate some applications of Data Replication 1 1 1 2 2 2 1 1 1 B B Ba a ac c ck k ku u up p p This section describes an application for backup using replication volumes Backing Up from the Replication Volume to Magnetic Tape Media In this method a repli...

Page 11: ...use they are not used as storage media When the restoration instruction is complete you can use the backup data even if the actual data replication has not been completed If data to be accessed is not restored to the master volume the data in the replication volume is accessed The user does not have to be aware of using which of the master volume or replication volume This reduces the data restora...

Page 12: ...n building an evaluation environment operations are suspended only for the time which takes to separate replication volumes from the master volume Therefore the suspension time can be substantially reduced Figure 1 4 Test Environment Setting The procedure for using a replication volume as a test environment is described below 1 Connect the master volume MV and replication volume RV 2 Suspend the p...

Page 13: ...update tasks without affecting database search tasks Figure 1 5 Parallel Processing of Search Task The procedure for parallel processing of search operation is described below 1 In the nighttime suspend search tasks and connect the master volume MV and replication volume RV 2 In the daytime separate the master volume MV and replication volume RV Then perform update tasks and search tasks in parall...

Page 14: ...iguration To install and use the Data Replication function the following hardware devices are required Disk array Disk arrays on which the Data Replication function either with DynamicDataReplication or RemoteDataReplication is installed are required Management server iSM is installed in the management server that monitors disk arrays This server controls disk arrays and the Data Replication funct...

Page 15: ...functions such as state display pair setting and replication operation for DynamicDataReplication or RemoteDataReplication ReplicationControl Provides commands for checking replication operations and replication states from the business server and also provides library functions AccessControl The function to set the logical disks that can be accessed for each business server DynamicDataReplication...

Page 16: ... the volume classification in the disk array is categorized into the following three types Figure 2 1 describes sample volume classification Isolated Volume IV Volume with no pair setting By specifying the pair setting to IV you can set it to MV or RV Master Volume MV Volume with the pair setting The original volume in the pair Normally volumes used in operation are set as MVs To distinguish the u...

Page 17: ...me Classification Volume A1 A2 B1 IV Volume A3 MV PV of the pair A3 A4 Volume A4 RV dRV of the pair A3 A4 and MV of the pair A4 B2 Volume B2 RV rRV of the pair A4 B2 Disk Array A Disk Array B MV PV A3 RV MV dRV A4 RV rRV B2 Pair Setting FC IV A1 IV A2 IV B1 ...

Page 18: ... reflected into the RV and then data replication is suspended and the RV is separated The updates made to MV after starting Separate are not reflected to RV and stored in the disk array as update differences When executing Separate you can determine when to make the RV available by choosing either of the following Separate for making RV available after completion of separation Separate completion ...

Page 19: ...ated Restore update Restores the MV while automatically reflecting the updated data of the MV into the RV Even after the difference between MV and RV is resolved and Restore is completed any data update made to MV is reflected to RV Restore without RV being updated Restore protect Restores the MV without reflecting the updated data of the MV into the RV After the difference between MV and RV is re...

Page 20: ...zation state rpl replicate Replicate rpl exec Executing synchronization rpl sync Synchronization state sep separate Separate sep exec Executing Separate separated Separate completion state rst restore Restore rst exec Executing Restore rst sync Synchronization state When Restore update is executed updates to MV are reflected to RV When Restore protect is executed updates to MV are not reflected to...

Page 21: ...ginning of Replicate is completely reflected to RV The difference is zero The state from the beginning of Replicate to the content of MV is completely reflected to RV is called the Replicate execution The state where the difference between MV and RV is zero is called the state synchronized by Replicate or simply the synchronous state Replicate execution and the state synchronized by Replicate are ...

Page 22: ...te When Separate is executed under specification of immediate use of RV Separate immediate the RV contents can be referred to or updated immediately after the Separate start instruction is issued regardless of whether or not all the MV contents have been reflected into the RV This feature is implemented as follows When an update reference request for the RV is made and access to an area where diff...

Page 23: ...ized by Restore are collectively called the Restore state When Restore protect is executed the updated data of the MV is not reflected into the RV In this case the updated information of the MV is managed as the difference between the MV and RV contents so that the difference can be reflected into the RV when Replicate Restore is executed subsequently When the Synchronous State sync is placed afte...

Page 24: ... RV are allowed Separate State Failure Separation fault MV and RV are forcibly separated in the disk array due to a copy fault Read and write to RV are allowed Synchronous Execution rpl exec Reflection of the difference between MV and RV at Replicate has not been completed The difference is being reflected from MV to RV Updates to MV is reflected to RV As a rule read and write to RV are not allowe...

Page 25: ...opy Control State Copy Control State Copy State Synchronous Copy Mode Copy for reflecting difference is performed Updates to MV are reflected RV sequentially Foreground Copy Semi synchronous Copy Mode Copy for reflecting difference is performed I O of updates to MV is completed when data is written to MV and the data is copied to RV immediately after that Can be set for a RemoteDataReplication pai...

Page 26: ...ous Copy instruction Semi synchronous Copy instruction Resume instruction Background Copy instruction Suspend instruction The Resume instruction changes Background Copy or Suspend to preceding Foreground Copy Synchronous Copy Mode Semi synchronous Copy Mode Figure 2 6 shows the state transition diagram of the copy control states Figure 2 6 State Transition Diagram of Copy Control State Foreground ...

Page 27: ...the write time to MV is the same as normal I O In this way there are correlations between the amount of accumulated differences in MV and RV and write performance in different copy control states The correlation for each copy control state is shown in Table 2 3 Table 2 3 Correlations in Different Copy Control States Copy Control State Difference between MV and RV Write Overhead to MV Foreground Sy...

Page 28: ...LU Logical Unit is invalid Note 4 Note 4 Note 4 Note 4 Available Available with administrative restrictions Unavailable rpl Replicate state RW Read Write rst Restore state RO Read Only sep exec Separate execution NR Not Ready separated Separated state NA Not Available Note 1 For Separate immediate Read Write RW is set even during execution of Separate However keep the following operational influen...

Page 29: ...ansition to the Not Available state is automatically controlled by the VSS function The user need not perform the operation normally 2 2 2 7 7 7 C C Co o op p py y y F F Fa a au u ul l lt t ts s s a a an n nd d d S S St t ta a at t te e e T T Tr r ra a an n ns s si i it t ti i io o on n ns s s If copy operation between MV and RV is not performed normally due to a connection failure between them a ...

Page 30: ... replication operation can be performed For pairs in the freeze state note the following Freeze in the Separate state If the pair goes into the freeze state in Separate execution it transits to the Separate state due to a fault failure separation when the following operation is performed When updates to MV are done to the area where copy to RV has not been completed In this case to use RV after th...

Page 31: ...ve e el l ls s s Use the following functions to perform operations related to Data Replication through the iSM Client State Monitoring Replication manager Configuration setting Since operations performed from Replication manager includes important operations on volumes the operating authorization is set according to the following allowance levels However when the server is disconnected by State Mo...

Page 32: ...on level L3 Allows all operations 3 3 3 1 1 1 2 2 2 E E Ev v ve e en n nt t t D D De e et t te e ec c ct t ti i io o on n n a a an n nd d d O O Op p pe e er r ra a at t ti i io o on n n M M Me e es s ss s sa a ag g ge e e O O Ou u ut t tp p pu u ut t t Events that occur in response to various operations performed on disk arrays and volumes can be detected by the state monitoring and displayed in t...

Page 33: ...lude operations performed together with the ReplicationControl commands Regarding S2100 and A2100 the detection of events other than pair setting and unpairing events may not be possible during the state monitoring Furthermore the state monitoring monitors all the disk arrays volumes for a specified time interval default 15 seconds to detect events Therefore there is a time difference between when...

Page 34: ...r iSM is started replication related device information is created internally Replication related device information is recreated according to an information recreate instruction from ReplicationControl Even if an attempt is made to display the Replication Screen at this timing the screen cannot be displayed because the device information cannot be obtained If this happens retry to display the scr...

Page 35: ...nfiguration and state of the disk array and the information list display area ii on the right part of the screen displaying the Volume List and disk array link configuration When the Replication Screen appears for the first time it contains only the configuration display area i and the information list display area ii is displayed by clicking the disk array icon The information list display area i...

Page 36: ... on n n D D Di i is s sp p pl l la a ay y y A A Ar r re e ea a a The configuration display area is under the monitoring by the iSM and displays the list and the state of the Disk Arrays that can use the Replication function as well as the status of link among them Figure 3 2 Example of Configuration Display Area ...

Page 37: ...ot recognize the disk array of the link destination when the link is established between disk arrays the disk array name may be displayed as the address value Subsystem Absolute Address which can uniquely identify the disk array not duplicated with other disk arrays Each information screen to be explained in the following page or later may not be displayed depending on the display items selected i...

Page 38: ...RV are displayed in one line respectively a total of two lines for a pair and IV is displayed in one line If pair setting is performed for volumes the states of the volumes are displayed in two lines for one pair so as to check the states of MV and RV IV is displayed in one line To perform sort click the item name by which you want to sort You can drag drop an item to permute the order of the item...

Page 39: ...er s Manual Function Guide Displayed Icon Description Green MV MV BV having the BV attribute Indicates the volume of replication origin White IV BV having the BV attribute Indicates a volume which is not a replication object BV becomes MV MV BV by operating pair setting ii Number The logical disk number is displayed in hex digit It is the same as the logical disk number shown in the main screen St...

Page 40: ...state These events occur in a pair connected by RemoteDataReplication when the host to which a local volume is connected cannot recognize the volume on the remote side Also in such a case operations such as Forced Separate and Forced Unpair for local volumes are enabled v Pair Number The logical disk number of paired volume is displayed in hex digit vi Pair Disk Name The logical disk name of paire...

Page 41: ...us that difference between MV and RV is reducing to zero during Separation Execution Separated Indicates the status that the data copying is not processing between MV and RV It becomes this status right after pair setting Forced Separation Indicates the status that MV and RV are separated forcibly by the forced separate instruction Fault Indicates the status of forced separation inside the disk ar...

Page 42: ...iting to MV and immediately performs copying to RV Background Copy This mode performs copying to RV asynchronously after stopping the command for writing to MV xii RV Mode RV access restrictions are displayed For more information refer to 2 6 RV Access Restriction Display Description R W Permit Indicates that the volume can be read and written from the host Read Only Indicates that the volume can ...

Page 43: ...cution if the pair relation has multiple layers or if multiple RVs are connected to one MV Refer to the execution conditions of the operations If the Number of Pairs is 2 or greater check the hierarchy in the Connection screen xv Capacity GB Indicates the capacity of the logical disk xvi LD Set Name Indicates the name of the LD Set to which the volume belongs xvii ATgroup Name Indicates the name o...

Page 44: ...ch you want to sort You can drag drop an item to permute the order of the items Figure 3 4 Example of Disk Array LINK Information Screen The Disk Array LINK Information screen displays information regarding the following items i LINK Number Indicates the number of the linked disk arrays The link number 0 is allocated to the first disk array and 1 to the second disk array refer to Figure 3 5 Replic...

Page 45: ...tes the normal status Offline Indicates that the link setting is unconfirmed during startup of the disk array Freeze Indicates that the Data Replication function in the target disk array is frozen Link Checking Indicates that the link status is being checked due to a failure of communication in the link It transits to Normal or Fault after a certain time interval Fault Indicates that the link is i...

Page 46: ...y 1 for using RDR The following shows an example of 3000 4000 series Figure 3 5 Replication Link Information Disk Array 1 Disk Array 2 Disk Array 3 00h 01h LINK Number Replication Director 05h 0dh Director Number Path 00h Path 01h Path 02h Path 03h 0 1 0 1 Port Number Path Number 11h Path 01h 0 1 Path 00h ...

Page 47: ...y Fault List 3 4 5 Record Screen Information 3 4 3 Environment Setting 3 3 12 Displaying Volume Connection State when Connection Screen is displayed 3 4 6 Display Disk Array Properties when Disk Array is selected from configuration display area and Properties is displayed 3 4 7 Display Link Properties when Director Port is selected from Disk Array LINK Information Screen and Properties is displaye...

Page 48: ...freeze 3 3 11 Background Copy Level Change For details on operations related to the AT group refer to the Data Replication User s Manual Disaster Recovery System Installation and Operation Guide Displays Help on the Replication screen Displays Help on the dialog list regarding Replication screen ...

Page 49: ... an example of an Execution dialog information screen Items added when Details is selected Figure 3 6 Example of Execution Dialog Information Screen Information on the following items is displayed on the information screen of the execution dialog Items v vi and vii are displayed only when Details is selected i Execution Result Displays the execution result of the operation Operation cannot be perf...

Page 50: ...s the Synchronous Semi synchronous mode during copy operation viii Number Displays the logical disk number of MV ix MV Disk Array Name Displays the disk array name to which MV belongs x Pair Disk Name Displays the logical disk name of RV xi Pair Number Displays the logical disk number of RV xii RV Disk Array Name Displays the disk array name to which RV belongs xiii ATgroup Name Displays the name ...

Page 51: ...hin the following bounds You can set up to three volumes of RVs dRVs or up to four volumes of RVs including rRV for one MV at the same time You can set RVs in up to 2 disk arrays for one PV You can set DynamicDataReplication only for one layer in the disk array You can set a pair only when the two volumes have the same capacity Figure 3 7 shows an example of the pair setting Figure 3 7 Example of ...

Page 52: ...ically If the selected volume is a volume for which pair setting cannot be performed as MV the following prompt appears Figure 3 8 Confirmation Screen The possible causes are as follows Unexecutable condition Description DDR RDR Due to the description of the reason the volume cannot be set as MV of DDR and RDR DDR Due to the description of the reason the volume cannot be set as MV of DDR RDR Due t...

Page 53: ...volumes in different Disk Arrays ii Disk Array Name On the MV part displays the disk array name with the selected volume On the RV part displays the disk array name for which pair setting of remote data replication can be performed iii Object To make only the selected volume the object of MV check this default To make all the volumes that can be used as MV the objects uncheck this iv LD Set Name Y...

Page 54: ...ou click the Execute button the following message is displayed Figure 3 10 Confirmation Screen Unpair Do one of the following to display the Unpair screen y Select a volume in the Replication Information screen click Operation on the menu bar of the Replication screen and then select Unpair y Right click in the Replication Information screen and then select Unpair Figure 3 11 shows an example of t...

Page 55: ...t again in the Separated state Freeze Defreeze the Data Replication function and execute it again MV Force Unpaired Perform Forced Unpair for RV MV Monitoring Suspended Change the disk array of MV to the Monitored state and execute it again RV Monitoring Suspended Change the disk array of RV to the Monitored state and execute it again RV Force Unpaired Perform Forced Unpair for MV MV Outside iSM M...

Page 56: ...d is monitored viii The disk array where the specified MV and RV are stored is not in the Freeze state ix If the specified MV is registered in the AT group the MV and the specified RV are set as a DDR pair x A volume having snapshot attributes other than BV is not set as MV xi A volume having snapshot attributes is not set as RV Do not execute Pair Setting for a reserved volume of the business ser...

Page 57: ...te In this case even if the synchronous state of the pair is separated the RV mode is kept in the Not Ready state Make sure to change the RV set in the Not Ready state to the R W Permit state by RV mode change operation prior to unpair with the exception of the case where the logical disk of RV is used by a business server or backup server in succession after unpair ...

Page 58: ...rmation screen point to Volume Operation and then select Replicate Figure 3 13 shows an example of the Replicate screen Figure 3 13 Example of Replicate Screen From the list select a pair for which you want to perform the operation and then click the Execute button You can select multiple executable pairs and execute them in a batch Unexecutable pairs cannot be selected i Selected Volume List Disp...

Page 59: ...itored state and execute it again RV Monitoring Suspended Change the disk array of RV to the Monitored state and execute it again MV Force Unpaired Perform Forced Unpair for RV RV Force Unpaired Perform Forced Unpair for MV MV Outside iSM Management Execute it for a pair under the iSM management All Link Path Abnormal Refer to 2 2 2 2 Link fault in the Data Replication User s Manual Installation a...

Page 60: ...cription Not Ready Operations for the volume cannot be performed from the host Read Only For the volume only read can be performed from the host Care should be taken to specify Read Only Refer to 2 6 RV Access Restriction When you click the Execute button the following message is displayed Figure 3 14 Confirmation Screen Execution Conditions To perform Replicate the following conditions must be sa...

Page 61: ...tion Figure 3 15 illustrates the execution conditions of Replicate Each of i to xiii in the figure corresponds to the respective number above Figure 3 15 Execution Conditions of Replicate Target Pair RV MV RV MV RV MV i Replication Target Disk ii Pair Setting iii Separated iv Semi synchronous not allowed for the same disk array viii Not in the Freeze state ix Disk array monitored x RV is unmounted...

Page 62: ...ion Information screen click Operation on the menu bar of the Replication screen point to Volume Operation and then select Separate Right click in the Replication Information screen point to Volume Operation and then select Separate Figure 3 16 shows an example of the Separate screen Figure 3 16 Example of Separate Screen From the list select a pair for which you want to perform the operation and ...

Page 63: ... s Manual Installation and Operation Guide for Windows to recover from the failure Freeze Defreeze the Data Replication function and execute it again MV Monitoring Suspended Change the disk array of MV to the Monitored state and execute it again RV Monitoring Suspended Change the disk array of RV to the Monitored state and execute it again MV Force Unpaired Perform Forced Unpair for RV RV Force Un...

Page 64: ...Read and write can be performed for a separated RV is complete from the host Read Only Only read can be performed for a separated RV is complete from the host When you click the Execute button the following message is displayed Figure 3 17 Confirmation Screen Execution Conditions To perform Separate the following conditions must be satisfied RV cannot be reused until Separate is completed However ...

Page 65: ...e Figure 3 18 Execution Conditions of Separate Target Pair MV RV i Replication Target Disk ii Pair Setting iii Not in Restore execution iv Not in the Freeze state v Disk array monitored vi MV is unmounted from the host vii The specified MV is not registered in the AT group viii Separate is not being performed between the upper volume and the lower volume that are paired ...

Page 66: ... of the Replication screen point to Volume Operation and then select Restore Right click in the Replication Information screen point to Volume Operation and then select Restore Figure 3 19 shows an example of the Restore screen Figure 3 19 Example of Restore Screen From the list select a pair for which you want to perform the operation and then click the Execute button You can select multiple exec...

Page 67: ...ute it again in the Separated state Freeze Defreeze the Data Replication function and execute it again Being separated by other pair Separate is being executed in another layer Execute it again after Separate is complete MV Monitoring Suspended Change the disk array of MV to the Monitored state and execute it again RV Monitoring Suspended Change the disk array of RV to the Monitored state and exec...

Page 68: ...executing Restore RV Update needs to be selected for executing Restore in the same operation mode as for Version1 4 or earlier If RV Protection is selected selection of v Copy mode is not permitted iv Range Normally Only Difference is selected which copies only the difference area of MV and RV You can also select All which copies the entire area explicitly Radio Button Description Only Difference ...

Page 69: ...et pair is Separate but not Separate Execution iv The Semi synchronous Copy mode cannot be specified for pairs set in the same disk array The Semi synchronous Copy mode can be specified only for pairs set in different disk arrays v The activity state of the pair of the specified MV and the paired RV is Separate vi The activity state of the pair of the specified MV and the paired upper MV is Separa...

Page 70: ...eparated iv Semi synchronous not allowed for the same disk array viii Not in the Freeze state ix Disk array monitored x MV and RV are unmounted from the host xi The specified MV is not registered in the AT group vii Separated xii Separate is not being performed for a lower pair vi Separated xii Separate is not being performed for an upper volume Target Pair RV MV RV v Separated xii Separate is not...

Page 71: ... the Replication Information screen click Operation on the menu bar of the Replication screen point to Volume Operation and then select Suspend Copy Right click in the Replication Information screen point to Volume Operation and then select Suspend Copy Figure 3 22 shows an example of the Suspend Copy screen Figure 3 22 Example of Suspend Copy Screen From the list select a pair for which you want ...

Page 72: ...ced Unpair for RV RV Force Unpaired Perform Forced Unpair for MV RV Forced Separate Execute it for a volume in the Synchronous state MV Outside iSM Management Execute it for a pair under the iSM management All Link Path Abnormal Refer to 2 2 2 2 Link fault in the Data Replication User s Manual Installation and Operation Guide for Windows to recover from the failure Have been registered to ATgroup ...

Page 73: ...e executable pairs and execute them in a batch Unexecutable pairs cannot be selected i Selected Volume List Displays the list of the pair MV RV information selected in the Replication Information screen Volumes whose Execution Result is Unexecutable cannot be selected because they do not satisfy the execution conditions For the Unexecutable volumes do the following by referring to the Unexecutable...

Page 74: ...anagement All Link Path Abnormal Refer to 2 2 2 2 Link fault in the Data Replication User s Manual Installation and Operation Guide for Windows to recover from the failure Have been registered to ATgroup Execute it for a pair that is not registered in the AT group ii Summary Display Details Display For more information on this item refer to 3 2 6 Information Displayed on Execution Dialog iii Copy ...

Page 75: ...sumed v The disk array where the specified MV and RV are stored is not in the Freeze state vi The disk array where the specified MV and RV are stored is monitored In case of copy suspend MV must be monitored vii The specified MV is not registered in the AT group Figure 3 25 illustrates the execution conditions of operations of suspending resuming copy Each of i to vii in the figure corresponds to ...

Page 76: ...creen point to Volume Operation and then select Change to Background Copy Figure 3 26 shows an example of the Change to Background Copy screen Figure 3 26 Example of Change to Background Copy Screen From the list select a pair for which you want to perform the operation and then click the Execute button You can select multiple executable pairs and execute them in a batch Unexecutable pairs cannot ...

Page 77: ...k Path Abnormal Refer to 2 2 2 2 Link fault in the Data Replication User s Manual Installation and Operation Guide for Windows to recover from the failure Have been registered to ATgroup Execute it for a pair that is not registered in the AT group ii Summary Display Details Display For more information on this item refer to 3 2 6 Information Displayed on Execution Dialog When you click the Execute...

Page 78: ...h of i to vi in the figure corresponds to the respective number above Figure 3 28 Execution Conditions of Change to Background Copy Target Pair MV RV i Replication Target Disk ii Pair Setting iii Replicate or Restore iv Not in the Freeze state v Disk array monitored vi The specified MV is not registered in the AT group ...

Page 79: ... Replication screen point to Volume Operation and then select RV Mode Change Right click in the Replication Information screen point to Volume Operation and then select RV Mode Change Figure 3 29 shows is an example of the RV Mode Change screen Figure 3 29 Example of RV Mode Change Screen From the list select a pair for which you want to perform the operation and then click the Execute button You ...

Page 80: ...d Unpair for MV All Link Path Abnormal Refer to 2 2 2 2 Link fault in the Data Replication User s Manual Installation and Operation Guide for Windows to recover from the failure Have been registered to ATgroup Execute it for a pair that is not registered in the AT group ii Summary Display Details Display For more information on this item refer to 3 2 6 Information Displayed on Execution Dialog iii...

Page 81: ...k ii The target MV and RV are paired iii In the Separated state when R W Permit is specified iv The disk array where the specified MV and RV are stored is not in the Freeze state v The disk array where the specified RV is stored is monitored vi The specified RV is not registered in the AT group Figure 3 32 illustrates the execution conditions of change of the RV mode Each of i to vi in the figure ...

Page 82: ...parate screen Select a volume in the Replication Information screen click Operation on the menu bar of the Replication screen point to Forced Operation and then select Forced Separate Right click in the Replication Information screen point to Forced Operation and then select Forced Separate Figure 3 33 shows an example of the Forced Separate screen Figure 3 33 Example of Forced Separate Screen Fro...

Page 83: ...eparate perform Forced Separate for the volume in MV with the pair setting MV Monitoring Suspended After execution of RV Forced Separate perform Forced Separate for the volume in MV with the pair setting MV Freeze After execution of RV Forced Separate perform Forced Separate for the volume in MV with the pair setting MV Force Unpaired Perform Forced Unpair for RV RV Separate Complete Execute it fo...

Page 84: ...displayed when RV is not under the iSM After execution perform Forced Separate for MV or RV not separated Figure 3 34 Warning Screen for MV without under iSM Figure 3 35 Warning Screen for RV without under iSM When you click the Yes button the following message is displayed Figure 3 36 Confirmation Screen ...

Page 85: ...and RV are stored is not in the Freeze state iv The disk array where the specified volume is stored is monitored v The specified MV or RV is not registered in the AT group Figure 3 37 illustrates the execution conditions of Forced Separate Each of i to v in the figure corresponds to the respective number above Figure 3 37 Execution Conditions of Forced Separate Target Pair MV RV i Replication Targ...

Page 86: ... display the Forced Unpair screen Select a volume in the Replication Information screen click Operation on the menu bar of the Replication screen point to Forced Operation and then select Forced Unpair Right click in the Replication Information screen point to Forced Operation and then select Forced Unpair Figure 3 38 shows an example of the Forced Unpair screen Figure 3 38 Example of Forced Unpai...

Page 87: ...the pair setting MV Monitoring Suspended After execution of RV Forced Unpair perform Forced unpair for the volume in MV with the pair setting MV Freeze After execution of RV Forced Unpair perform Forced unpair for the volume in MV with the pair setting MV Force Unpaired Perform Forced Unpair for RV RV Separating Execute it again in the Separated state RV Replicate Execute it for a volume in the Se...

Page 88: ...V and RV In this case perform Forced Unpair for MV or RV for which Unpair is not performed Figure 3 39 is displayed when MV is not under the iSM Figure 3 40 is displayed when RV is not under the iSM Figure 3 39 Warning Screen for MV without under iSM Figure 3 40 Warning Screen for RV without under iSM When you click the Yes button the following message is displayed Figure 3 41 Confirmation Screen ...

Page 89: ... RV are stored is not in the Freeze state v The disk array where the specified volume is stored is monitored vi The specified MV or RV is not registered in the AT group Figure 3 42 shows the execution conditions for Forced Unpair Each of i to vi in this figure correspond to the respective number above Figure 3 42 Execution Conditions of Forced Unpair Target Pair MV RV i Replication Target Disk ii ...

Page 90: ... Replication screen point to System Operation and then select Freeze Defreeze Select the disk array in the configuration display area right click it and then select Freeze Defreeze Figure 3 43 shows an example of the Freeze Defreeze screen Figure 3 43 Example of Freeze Defreeze Screen i Freeze Defreeze Execute Button Description Freeze Freezes invalidates the Data Replication function of the disk ...

Page 91: ...L L Le e ev v ve e el l l C C Ch h ha a an n ng g ge e e You can change the priority of Background Copy of the disk array Operation Procedure Do one of the following to display the Background Copy Level Change screen Select the disk array in the configuration display area click Operation on the menu bar of the Replication screen point to System Operation and then select Background Copy Level Chang...

Page 92: ...2 4 Copy Control State Return Default Value Restores the default value of the disk array Change You can specify the priority of the disk array When you click the Execute button the following message is displayed Figure 3 46 Confirmation Screen Execution Conditions To perform operations of the copy control state the following conditions must be satisfied i The target disk array is recognized by Rep...

Page 93: ...tion screen point to View on the menu bar of the Replication screen and then select Connection Screen y Select a volume in the Replication Information screen right click it and then select Connection Screen y Double click a volume in the Replication Information screen Figure 3 47 shows an example of the Connection screen Figure 3 47 Example of Connection Screen This screen displays the pair select...

Page 94: ...d write can be performed for a volume from the host Read Only Only read can be performed for a volume from the host Not Ready Operations for a volume cannot be operated from the host Not Available Operations for a volume cannot be operated from any host v Operation Time Display Displays the Start Time and End Time when operation for a volume is performed Displays the transition time at the forced ...

Page 95: ...e color of the original disk moves through the pipe y For DynamicDataReplication Replicate is executed Replicate is complete Restore is executed Restore is complete Separate is executed Separate is complete y For RemoteDataReplication Replicate is executed Replicate is complete Restore is executed Restore is complete Separate is executed Separate is complete ...

Page 96: ...en Replication is complete Amount of Difference 0 Amount of Difference and Transfer Rate MB S disappears Volume Color The Volume Color changes by layer and it becomes the layer color immediately after setting the pair or when Separate has completed When volume colors of the pair match it indicates synchronization Layer color i PV Yellowish green ii 1st Layer Light blue iii 2nd Layer Blue iv 3rd La...

Page 97: ...ich Local Volume has connected by having performed Forced Unpair to Remote Volume etc it may display like the above Case of the 2nd layer or more layer pair composition when Forced Unpair is performed to the volume of the 1st layer or the 2nd layer the volume of upper layers may not be displayed Copy Progress Displays the progress of Replicate Restore etc as the change in volume Example of Display...

Page 98: ...e replication operations by right clicking the volume in the Connection screen For how to operate refer to the items in 3 3 Turns to the layer color because Separate is complete Separate is executed 3 3 2 Replicate 3 3 3 Separate 3 3 4 Restore 3 3 5 Suspend Resume Copy 3 3 5 Suspend Resume Copy 3 3 6 Change to Background Copy 3 3 7 RV Mode Change 3 3 8 Forced Separate ...

Page 99: ...nformation the disk array LINK Information and the AT group information for the specified disk array can be output to a file in CSV format This CSV file can be used as a data for spreadsheet software On the menu bar do the following Click File and then click CSV Output of Information List Display Figure 3 48 shows an example of the CSV Output of Information List Display screen Figure 3 48 Example ...

Page 100: ...eWN1 Replicate Storage4300 Synchronized Foreground Copy Not Ready 0 KB 1 4 2 MV 0003h WN driveWN3 0004h driveWN4 Replicate Storage4300 Synchronized Foreground Copy 3 7GB 1 4 2 RV 0004h WN driveWN4 0003h driveWN3 Replicate Storage4300 Synchronized Foreground Copy Not Ready 3 7 GB 1 4 2 IV 0005h WN driveWN5 4 2 WN wos1 ATG1 IV 0006h WN driveWN6 4 2 WN wos1 ATG2 MV 0007h WN driveWN7 0008h driveWN8 Re...

Page 101: ...tting which is one of configuration setting functions For details refer to the Configuration Setting Tool User s Manual GUI Pair List This section describes the pair list that is output to a file by the replication management function The AT group information can also be output to a CSV file For details refer to the Data Replication User s Manual Disaster Recovery System Installation and Operation...

Page 102: ...is 24 8 ATgroupName AT group name The maximum number of characters is 32 9 DiskArrayName Name of the disk array to which the AT group belongs The maximum number of characters is 32 10 OSType Usage type of the logical disk registered in the AT group 11 ExVolName Name of the logical disk registered in the AT group The maximum number of characters is 24 Example Pair Name List iSM Ver 3 2 1 Tue Feb 24...

Page 103: ...lect the settings to the Replicate Screen next displayed perform Record Screen Information 3 3 3 3 3 3 1 1 16 6 6 R R Re e ef f fr r re e es s sh h h While the iSM server in the upper left part of the configuration display area is being selected this function refreshes information of the disk array connected to the server The information displayed on the screen is cleared While the Disk Array icon...

Page 104: ...o on n n The screen information of Replication Screen is recorded The recorded information is reflected the next time the Replication Management screen is activated On the menu bar do the following Click View and then click Record Screen Information Recorded Items Width of the item Location of the item Screen size Screen location IV display state Update interval of information Display state of the...

Page 105: ...ties Select a disk array in the configuration display area right click it and then select Properties Figure 3 52 shows an example of the Disk Array Properties screen Figure 3 52 Example of Disk Array Properties Screen The items indicate the following information i Disk Array Name Displays the identification information of the disk array ii Differential Map Displays whether the difference control f...

Page 106: ...which can uniquely identify the disk array not overlapping with other disk arrays vii Maximum Number of Concentrator Maximum Number of Volumes of One ATgroup Maximum Number of Volume of All ATgroup For details refer to the Data Replication User s Manual Disaster Recovery System Installation and Operation Guide 3 3 3 3 3 3 1 1 19 9 9 D D Di i is s sp p pl l la a ay y y L L Li i in n nk k k P P Pr r...

Page 107: ...information iii Director Number Indicates the replication director host director for the 2400 and 2800 series number of the selected link information iv Port Number Indicates the port number of the replication director host director for the 2400 and 2800 series v Replication Port N Port Identifier Lock Indicates whether the port ID of the target is variable or fixed Display Description 00h Variabl...

Page 108: ...uring startup of the disk array Freeze Indicates that the Data Replication function in the target disk array is frozen Link Checking Indicates that the link status is being checked due to a failure of communication in the link Fault Indicates that the link is invalid due to a failure of communication in the link Not Clear Indicates the state other than the above ...

Page 109: ... volume information of the disk array that has a copy fault no faults are displayed on the copy fault list screen You must acquire the volume information of the disk array that has a copy fault For the procedure for acquiring the volume information refer to 3 2 3 Replication Information Screen On the menu bar do the following Click View and then click Copy Fault List Figure 3 54 shows an example o...

Page 110: ...pair This operation can be performed for a volume in the Fault state iii Restore Performs Restore for the selected pair This operation can be performed for a volume in the Fault state iv Resume Copy Performs Resume Copy for the selected pair This operation can be performed for a volume in the Abnormal suspend state v Forced Separate Performs Forced Separate for the selected pair This operation can...

Page 111: ...ns on the business server The ReplicationControl functions include the creation and display of the volume list replication operations pair operations and disk operations that are necessary for operating MV s and RV s in the system The description of UNIX in this chapter includes all of the UNIX systems supported by the ReplicationControl such as HP UX Solaris and so on ...

Page 112: ... iSMrc_query Paired Volume State Display Displays the Copy state of a pair iSMrc_sense Volume List Display Displays volume information iSMrc_ldlist Logical disk information display Obtains and displays logical disk list information iSMrc_pair Pair Setting and Unpair Sets and unpairs paired volumes iSMrc_arrayinfo Disk array information display Displays information on the replication function of a ...

Page 113: ...d the like For the direct operation for a disk array the logical disk of the target MV or RV needs to be registered in the volume list in advance on the server where commands for the replication operation are executed For details refer to 4 2 1 Direct Operation for a Disk Array y Operations linked with the iSM replication management function Installing ReplicationControl in the management server a...

Page 114: ...ted Available 1 If the control volume is not used the operation is available when a volume on the MV is recognized by the server OS and accessible to the MV 2 Only the volume of the system recognized by the server can be operated 4 4 4 2 2 2 1 1 1 D D Di i ir r re e ec c ct t t O O Op p pe e er r ra a at t ti i io o on n n f f fo o or r r a a a D D Di i is s sk k k A A Ar r rr r ra a ay y y For di...

Page 115: ...th a logical disk permitted to access the server Select a logical disk for each disk array from logical disks connected to each server as a control volume and define it as the volume used to issue an I O to a disk array beforehand to register it in the volume list Defining a control volume in the volume list in advance eliminates the need for considering the existence of a control volume during op...

Page 116: ...me and then connect the logical disks to each server Prior to the replication operation on each server create the volume list and register the logical disks to be operated in the volume list in advance y When you use a control volume prepare a control volume for each server It is not recommended that the same logical disk should be used as a control volume from multiple servers y The RAID format a...

Page 117: ...s been installed and is operating When you conduct ReplicationControl environment setting select MANAGER issuing an I O to a disk array via the iSM for the setting of I O issuing path to the disk array For details of the environment setting refer to Chapter 3 Operation Settings in the Data Replication Command Reference Operations linked with the iSM have the following advantages y You can use comm...

Page 118: ...tem needs to be performed on the business server and the backup server and data consistency needs to be secured y To perform replication and pairing the state monitoring information of the disk array held by the iSM needs to be in the latest state Therefore set a short update time interval of the state monitoring information held by the iSM or update the information of the disk array and logical d...

Page 119: ...disk vg Disk group name Specifies a name of the VxVM s disk group that includes the disk logical disk dg Targeted Not Targeted Notes 1 The identifier is a character string that indicates the volume type and is used in the following cases y When specifying a volume type by a replication operation command option mvflg rvflg or volflg y When specifying a volume type by a pair specification MV type or...

Page 120: ...e y Example for the Windows system Type MV Type RV ld dev000 ld dev001 drv E drv F ld dev006 drv G drv H ld dev007 Parallel configuration ld dev002 ld dev003 ld dev002 ld dev004 MV RV 1 1 ld dev005 y Example for the UNIX system Type MV Type RV sfn dev rdsk c16t1d0 sfn dev rdsk c16t1d1 sfn dev rdsk c16t1d2 sfn dev rdsk c16t1d3 vg dev vgvol ld dev rdsk c16t1d4 dev rdsk c16t1d5 dg dg_name ld dev001 l...

Page 121: ...n the Windows system by using the volume list creation and display function by means of the iSMvollist command it is possible to obtain and display drive letter HBT host adapter number bus number target ID and LUN logical unit number physical disk and logical disk names and associated OS type hereafter volume list of logical disks in the disk arrays The following is the description of the HBT y Ho...

Page 122: ... specific logical disk name is specified the system displays information only associated with the specified logical disk de option Displays information only associated with specified disk arrays sorted by using logical disk name as the key If a specific logical disk name is specified the system displays information only associated with the specified logical disk name dd option Displays information...

Page 123: ...sk array names p option Displays the version information and the date when the volume list is created as the property information of the volume list ax option Lists disk array information correspondence of all logical disks and the property information of the volume list Displayed Information i When the cr option is specified When the volume list is created or updated successfully the following me...

Page 124: ...name vaa VAA Volume Absolute Address type OS type hbt Host adapter number bus number target ID lun LUN disk_num Physical disk number disk_array_name Disk array name volume_name Mount point volume name path Drive letter or path name mounted in the NTFS volume folder accessed by a user iv When the ctl option is specified Information on control volumes as shown below is listed Control Volume List Dis...

Page 125: ...ume list disk_array_number Total number of disk arrays in the volume list volume_number Total number of volume information items in the volume list vi When the ax option is specified Disk array information information on correspondence of logical disks and property information of the volume list are listed as shown below Volume List iSMvollist Version X X XXX Date YYYY MM DD HH MM SS Disk Array Li...

Page 126: ...l disk number volume_name Mount point volume name path Drive letter or path name mounted to the folder of the NTFS volume the user accesses version Version information of the iSMvollist command used to create the volume list yyyy mm dd hh mm ss Date when the volume list is created or updated host_name Host name of the server owning the volume list disk_array_number Total number of disk arrays in t...

Page 127: ...ted to the system and create or update the volume list The volume list can be automatically created at the start of the business server However if settings remain unchanged since installation the volume list cannot be automatically created and therefore will need to be manually created To automatically create it it is necessary to change the name of the rc file that has been created at the install...

Page 128: ...en the volume list was created as property information of the volume list ax option Lists disk array information correspondence of all logical disks and property information of the volume list Displayed Information i When the r option is specified When the volume list is created or updated successfully the following message appears iSM11700 Please wait a minute iSM11100 Command has completed succe...

Page 129: ...o another path special file registered in the volume list and I O continuation to a disk array is tried When an error is detected in access to a path special file B is displayed in the Path information of the special file used at the time which indicates an error occurs in the special file After a path error is recovered when access to a volume by a blocked path is established successfully the Pat...

Page 130: ...isk_array_number Total number of disk arrays in the volume list volume_number Total number of volume information items in the volume list vi When the ax option is specified Disk array information correspondence information of logical disks and property information of the volume list are listed as shown below Volume List iSMvollist Version X X XXX Date YYYY MM DD HH MM SS Disk Array List Disk Array...

Page 131: ...he special file B appears version Version information of the iSMvollist command used to create the volume list yyyy mm dd hh mm ss Date when the column list was created or updated host_name Host name of the server owning the volume list disk_array_number Total number of disk arrays in the volume list volume_number Total number of volume information items in the volume list Execution Conditions To ...

Page 132: ...e volume list The function to define control volumes used for the business server to operate the data replication or snapshot function is also provided Screen Configuration To create or display the volume list with GUI use the Volume List Display screen The following is the layout of the Volume List Display screen Figure 4 5 Layout of Volume List Display Screen i Title bar Displays the title of th...

Page 133: ...e following information appears on the status bar VOLUME Displays the number of volume information items to be displayed on the Volume List Display screen If volume information of all disk arrays is displayed the number of all volume information items in the volume list is displayed For display by narrowing down disk arrays the number of volume information items of the target disk array is display...

Page 134: ...e menu bar of the Volume List Display screen y File menu y View menu y Operation menu y Help menu Create Update Volume List 4 5 3 3 Create Update the Volume List CSV Output of Information List 4 5 3 4 CSV Output of Information List Properties 4 5 3 5 Displaying Property Information of Volume List Exit 4 5 3 1 Starting Terminating Volume List Display Update Display Information 4 5 3 8 Updating Disp...

Page 135: ...rograms All Programs for Windows Server 2003 Storage Manager Volume List Volume List Display 2 The Volume List Display screen appears Figure 4 6 Volume List Display Screen Terminating the Volume List Display screen Do one of the following y Select Exit in File on the menu bar of the Volume List display screen y Click the close button of the system menu When the Volume List Display screen is termin...

Page 136: ...utton of disk array Selection Combo box on the screen of Volume List Display and select the target disk array The information of only the selected disk array is displayed Operation Procedure 1 Select the target disk array from the disk array Selection Combo box on the screen of Volume List Display 2 The volume information on the selected disk array is listed Figure 4 7 Narrowed down Display by Dis...

Page 137: ... screen The following inquiry message is displayed Figure 4 8 Execution Confirmation Screen for Create Update Volume List 2 Clicking the OK button executes Create Update Volume List Clicking the Cancel button cancels Create Update Volume List and returns to the Volume List Display screen 3 The following message appears when the Volume List has been created updated successfully Figure 4 9 Confirmat...

Page 138: ...t of Information List screen appears Figure 4 10 CSV Output of Information List Screen 1 Specify the save destination The default save destination is the etc folder in the installation directory 2 Specify the file name The default file name is vollist csv 3 Click the Save button to save the input information When the Cancel button is clicked the screen is returned to the Volume List Display screen...

Page 139: ...ume cce8986a 4d87 11d8 92a3 806d6172696f disk5 004h 0008h DB_CTL_RV Tokyo_Customer_DataBase RV MV 0008h DB_CTL_MV Tokyo_Customer_DataBase I Volume cce8986b 4d87 11d8 92a3 806d6172696f disk6 005h 0009h DB_ARCHIVE_RV Tokyo_Customer_DataBase RV MV 0009h DB_ARCHIVE_MV Tokyo_Customer_DataBase M Volume cce8986f 4d87 11d8 92a3 806d6172696f disk10 000h 0004h LD0004_MV S2800 MV RV 0011h LD0011_RV1 S2800 RV...

Page 140: ... To display property information select File Properties on the Volume List Display screen 2 To return to the Volume List Display screen click the Close button Figure 4 13 Property Information of Volume List y Version Displays the version information of the Storage Manager Volume List used to create the volume list y Created Displays the date when the volume list was created y Owner Host Name Displ...

Page 141: ... View Toolbar on the Volume List Display screen View Figure 4 14 Viewing Toolbar Hide Figure 4 15 Hiding Toolbar 4 4 4 5 5 5 3 3 3 7 7 7 V V Vi i ie e ew w w H H Hi i id d de e e S S St t ta a at t tu u us s s B B Ba a ar r r To select whether to view or hide the status bar specify View Status Bar on the Volume List Display screen View Figure 4 16 Viewing Status Bar Hide Figure 4 17 Hiding Status ...

Page 142: ... To start the screen for defining a control volume select Operation Define Control Volume from the Volume List Display screen A control volume is a volume used for issuing a control I O to a disk array from a server To define a control volume prepare a volume beforehand such as IV which can issue an I O to a disk array from a server securely Do not select RV or a link volume LV of the snapshot fun...

Page 143: ...d check whether the necessary logical disk can be accessed from the server When the control volume is not needed anymore delete the control volume from Selected Volume List Explanation The logical disk selected as the control volume cannot be recognized Action Check the Access Control state of the disk array and check whether the necessary logical disk can be accessed from the server To change the...

Page 144: ...Chapter 4 Functions of ReplicationControl 136 Figure 4 19 Register Control Volume Figure 4 20 Change Control Volume ...

Page 145: ...cted from Selected Volume List click the Yes button To return to the Define Control Volume screen without update click the No button Figure 4 21 Change Confirmation Screen of Define Control Volume Screen y Delete a control volume To delete the control volume that has already been registered in Selected Volume List select the logical disk to be deleted from Selected Volume List and click the Delete...

Page 146: ...reen of Define Control Volume Screen To close the Define Control Volume screen and return to the Volume List Display screen click the OK button To enable the saved definition information create or update the volume list to reflect the definition information of the control volume to the volume list When you click the Cancel button on the Define Control Volume screen the message for confirming wheth...

Page 147: ...Update Volume List from the Volume List Display screen to create and update the volume list and reflect the saved definition information of the control volume to the volume list for registration When the volume list is created or updated the display of the Volume List Display screen is updated automatically Confirm that the definition information is updated correctly by checking the displayed info...

Page 148: ...in Options For the iSMrc_replicate command you can specify the following options regarding the Replicate operation 1 Specifying paired volumes Specify MV and RV volumes y Specify MV mv volume mvflg mv_flg Specifies the volume and volume type of MV y Specify RV rv volume rvflg rv_flg Specifies the volume and volume type of RV For information on volume types refer to 4 3 Volume Types On the Windows ...

Page 149: ...y rvacc ro Only Read from the system can be performed Pay careful attention when you specify Ready Only rvacc ro for the RV access restrictions For details refer to 2 6 RV Access Restriction 5 Specifying the wait for Copy completion wait nowait The system can wait for the completion of the command after Replicate has been performed until the Synchronous state starts y Wait Specified wait second If...

Page 150: ...iption The execution message and the end message appear only when wait has been specified to wait for the Replication completion state If you do not want the execution message to appear change the RPL_WAITMSG setting in the replication operation option setting file For information about the replication operation option setting file refer to the Data Replication Command Reference YYYY MM DD hh mm s...

Page 151: ...nce YYYY MM DD hh mm ss Start End time Year Month Day Hour Minute Second special_file_name Special file name ld_name Logical disk name type OS type Replicating The character is dynamically updated until Replicate is completed Execution Conditions To perform Replicate the following conditions must be satisfied i The target MV and RV have been paired ii The target MV or RV has been registered in the...

Page 152: ... The iSM dedicated special file is not being created HP UX version UNIX only xiv When an LVM volume group or a VxVM disk group is specified the target volume group or disk group must be active UNIX only xv When specifying the combination of an LVM volume group or a VxVM disk group with a special file name logical disk name you must specify the same number of logical volumes that make up the volume...

Page 153: ...re State i Pair setting ii MV or RV has been registered in the volume list iii The volume list is not being created or updated iv RV has been unmounted v Disk array is not in the Freeze state vi Separated xi Semi synchronous Copy cannot be performed on the same disk array xii The disk is not a dynamic disk or GPT formatted partition disk Target Pair MV BV RV SV viii Not in the Snapshot Restore ope...

Page 154: ... consisting of multiple partitions you need to change the default setting For information about the replication operation option setting file refer to the Data Replication Command Reference 2 Specifying the access restrictions to RV after Separate rvacc You can specify the access restrictions to RV after Separate y Read Write rvacc rw Reference and update can be performed for RV y Read Only rvacc ...

Page 155: ...ced Separate must be performed by specifying RV or MV in the other system y If Forced Unpair is performed for either MV or RV subsequent replication operations will not function properly because inconsistency occurs in the recognized states of MV and RV 5 RV use start time rvuse You can select one of the following as the time for making the RV available y Immediately after Separate execution rvuse...

Page 156: ...h Description The execution message and the end message appear only when wait has been specified to wait for the Separated state If you do not want the execution message to appear change the RPL_WAITMSG setting in the replication operation option setting file Information about the replication operation option setting file refer to the Data Replication Command Reference YYYY MM DD hh mm ss Start En...

Page 157: ...nute Second special_file_name Special file name ld_name Logical disk name type OS type Separating The character is dynamically updated until Separate is completed Execution Conditions To perform Separate the following conditions must be satisfied i The target MV and RV are paired ii The target MV or RV has been registered in the volume list iii The volume list is not being created or updated iv Wh...

Page 158: ...e side In this case Copy is performed in specified sequential order UNIX only The above execution conditions ii iii vii viii ix and x are not applicable when conducting a joint operation with the iSM replication management Figure 4 27 illustrates the execution conditions of Separate Figure 4 27 Execution Conditions of Separate Target Pair MV RV i Pair setting ii MV or RV has been registered in the...

Page 159: ... file system Main Options For the iSMrc_restore command you can specify the following options regarding the Restore operation 1 Specifying paired volumes Specify MV and RV volumes y Specify MV mv volume mvflg mv_flg Specifies the volume and volume type of MV y Specify RV rv volume rvflg rv_flg Specifies the volume and volume type of RV For information about volume types refer to 4 3 Volume Types O...

Page 160: ... to 2 6 RV Access Restriction 5 Specifying the wait for copy completion wait nowait The system can wait for completion of the command after Restore until the Synchronous state y Wait Specified wait second If a value is specified in second the monitoring time interval of the disk array becomes the specified value The available range is from 1 through 30 seconds integer If the value is omitted the R...

Page 161: ...ting of the RPL_SEP_MODE environment variable For details of each setting refer to the Data Replication Command Reference Displayed Information The iSMrc_restore command displays messages when Restore starts during execution and when Restore ends On the Windows system Start message iSM13224 MV is restored Volume name volume_name Mount Point path Umount Start YYYY MM DD hh mm ss Umount Normal End Y...

Page 162: ...The character is dynamically updated until Restore is completed On the UNIX system Start message Restore Start YYYY MM DD hh mm ss MV special_file_name ld_name type RV special_file_name ld_name type Execution message Restoring End message Restore Normal End YYYY MM DD hh mm ss MV special_file_name ld_name type RV special_file_name ld_name type Description The execution message and the end message ...

Page 163: ...he pair of the specified RV and the paired lower RV is Separate xi The Semi synchronous Copy mode cannot be specified for paired volumes set in the same disk array The Semi synchronous Copy mode can be specified only for paired volumes set in different disk arrays xii Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed Windows only xiii The iSM dedicated special fil...

Page 164: ...ated i Pair setting ii MV or RV has been registered in the volume list iii The volume list is not being created or updated iv Both MV and RV have been unmounted v Disk array is not in the Freeze state vi Separated xi Semi synchronous Copy cannot be performed for the same disk array xii The disk is not a dynamic disk or GPT formatted partition disk Target Pair MV BV RV SV vii Snapshot of all the SV...

Page 165: ...s no effect Main Options For iSMrc_change command you can specify the following options for changing the Copy Control state 1 Specifying paired volumes Specify MV and RV volumes y Specify MV mv volume mvflg mv_flg Specifies the volume and volume type of MV y Specify RV rv volume rvflg rv_flg Specifies the volume and volume type of RV For information about volume types refer to 4 3 Volume Types 2 C...

Page 166: ...mand displays the following message when the Change Copy Control State starts and ends On the Windows system Start message Change Start YYYY MM DD hh mm ss MV disk_number ld_name type volume_name path RV disk_number ld_name type volume_name path End message Change Normal End YYYY MM DD hh mm ss MV disk_number ld_name type volume_name path RV disk_number ld_name type volume_name path Description YY...

Page 167: ...y mode cannot be specified for paired volumes set in the same disk array The Semi synchronous Copy mode can be specified only for paired volumes set in different disk arrays vii Changing from Synchronous Copy to Semi synchronous Copy mode or from Semi synchronous Copy to Synchronous Copy mode is disabled viii Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed Windo...

Page 168: ...ii MV or RV has been registered in the volume list iii The volume list is not being created or updated iv Disk array is not in the Freeze state v In the Replicate or Restore state vi Semi synchronous Copy cannot be performed in the same disk array vii Synchronous Copy cannot be changed to Semi synchronous Copy or Semi synchronous Copy cannot be changed to Synchronous Copy viii The disk is not a dy...

Page 169: ... the combinations below y MV and RV Waits for a specified pair of volumes to enter a target state y MV only When the ratio of MV and RV that is set for MV is 1 to 1 RV can be omitted and the same operation as when MV and RV are specified is performed for this pair y RV only Same operation as when MV and RV are specified 2 Wait end condition cond You can specify a condition for ending Wait This opt...

Page 170: ...nolim Unlimited wait On the Windows system the default value can be specified by using RPL_LIMWATCHDEV in the replication operation option setting file On the UNIX system the default value can be specified by using the RPL_LIMWATCHDEV environment variable For details of each setting refer to the Data Replication Command Reference Displayed Information The iSMrc_wait command displays the following ...

Page 171: ...ntil Wait is completed On the UNIX system Execution message Waiting End message activity_state Normal End YYYY MM DD hh mm ss MV disk_number ld_name type RV disk_number ld_name type Description If you do not want the execution message to appear change the setting of the RPL_WAITMSG environment variable For information about environment variables refer to the Data Replication Command Reference acti...

Page 172: ... UNIX only viii When specifying the combination of an LVM volume group or a VxVM disk group with a special file name logical disk name you must specify the same number of logical volumes that make up the volume group or disk group as MV RV on the special file name logical disk name side In this case Copy is performed in specified sequential order UNIX only The above execution conditions ii iii v v...

Page 173: ... MV mv volume mvflg mv_flg Specifies the volume and volume type of MV y Specify RV rv volume rvflg rv_flg Specifies the volume and volume type of RV For information about volume types refer to 4 3 Volume Types The target volumes MV and or RV can be specified in any of the combinations below y MV and RV Waits for a specified pair of volumes to enter a target state y MV only Waits for all the pairs ...

Page 174: ...ate state Start Time Operation start time state varies state End Time Operation end time state varies separate_diffsize Difference of copy occurred in the Separate state copy_diffsize Difference of copy occurred in the Replicate or Restore state rvacc Access restrictions for RV prev_state Paired operation state before the state transition On the UNIX system Displayed information MV Special File sp...

Page 175: ...tered in the volume list iii The volume list is not being created or updated iv Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed Windows only v The iSM dedicated special file is not being created HP UX version UNIX only vi When an LVM volume group or a VxVM disk group is specified the target volume group or disk group must be active UNIX only vii When specifying ...

Page 176: ...68 Figure 4 31 Displaying Replication State Target Pair RV MV i Pair setting ii MV or RV has been registered in the volume list iii The volume list is not being created or updated iv The disk is not a dynamic disk or GPT formatted partition disk ...

Page 177: ...mv_flg Specifies the volume and volume type For information about volume types refer to 4 3 Volume Types 2 Displaying attribute information attr Displays the logical disk attributes and the link state of the link volume LV for the data replication and snapshot functions Displayed Information The iSMrc_sense command displays the following information On the Windows system Displayed information Disk...

Page 178: ...ns Displays only when the attr option is specified link_status Link state of the link volume Displays only when the attr option is specified When the target volume is not a link volume hyphen appears link Connected unlink Unconnected Execution Conditions To display a specific volume name the following conditions must be satisfied i The target volume or the volume paired with the target volume has ...

Page 179: ...ing a specific volume name Figure 4 32 Displaying Specific Volume Name Target i The target volume or the volume paired with the target volume has been registered in the volume list ii The volume list is not being created or updated iii The disk is not a dynamic disk or GPT formatted partition disk ...

Page 180: ... used The iSMrc_ldlist command targets disk arrays that are recognized by the system and obtains and displays logical disks and associated information Main Options The iSMrc_ldlist command enables the specification of the following options y a option Lists information of the logical disks stored in all disk arrays y d option Lists information of disk arrays that are recognized by the system y de o...

Page 181: ... message is displayed until data has been received While data is being received the character is updated disk_array_name Disk array name management Identifies whether the system recognizes the disk array direct Disk array directly recognized by the system indirect Disk array which is not recognized by the system type OS type ldn Logical disk number ld_name Logical disk name attribute Logical disk ...

Page 182: ...d by the system Execution Conditions To display the information of logical disks the following conditions must be satisfied i The logical disk attribute indicating the reserve attribute is not displayed ii The logical disk attribute indicating the snapshot data volume SDV of the snapshot function is not displayed iii At least one logical disk of the target disk array is registered in the volume li...

Page 183: ... volumes 2 Specifying paired volumes Specify MV and RV volumes y Specify MV mv volume mvflg mv_flg Specifies the volume and volume type of MV y Specify RV rv volume rvflg rv_flg Specifies the volume and volume type of RV The pair setting and canceling operation iSMrc_pair command is performed on a single logical disk therefore it is not possible to specify an LVM volume group or a VxVM disk group ...

Page 184: ...because inconsistency occurs in the recognized states of MV and RV Displayed Information When the pair setting and unpairing has been successfully performed by the iSMrc_pair command the following message appears iSM13247 Command has completed successfully code pppp xxxx xxxx xxxx Description pppp Process number xxxx Detailed information code value for maintenance Execution Conditions To set or un...

Page 185: ...ing a volume of a dynamic disk or a GPT format partition disk is not allowed Windows only xiii The iSM dedicated special file is not being created HP UX version UNIX only The above execution conditions ii xi xii and xiii are not applicable when conducting a joint operation with the iSM replication management ...

Page 186: ... t ti i io o on n n F F Fu u un n nc c ct t ti i io o on n n To display information on the replication function of a disk array use the iSMrc_arrayinfo command The iSMrc_arrayinfo command obtains and displays information related to the replication function of the disk array recognized by the system Main Options The following options can be used with the iSMrc_arrayinfo command to display informati...

Page 187: ...t y Build Differential Map is installed y Not Build Differential Map is not installed replication_status Status of the replication function of a disk array y Ready The function is available y Freeze The function is unavailable The replication function of the disk array freezes or the disk array is OFF bgcopy_level Background copy level Indicates the priority of Background Copy rv_setting Maximum n...

Page 188: ...tatus unknown disk array starting y Link Check The link status involved in abnormal occurrence being checked director_number Director number Number of the replication director or host director to which the path indicated by a path number is connected Execution Conditions To display information on the replication function of a disk array the following conditions must be satisfied i At least one log...

Page 189: ...m m mm m ma a an n nd d d To carry out a file system flush the iSMrc_flush command is used The iSMrc_flush command flushes the file system without unmounting the association of a drive letter and volume and writes the data in the file system buffer which has not been reflected to the disk When you execute this command you can reflect data to the disk without quitting the application This command e...

Page 190: ...ush the following conditions must be satisfied i The target volume is registered in the volume list ii The target volume is in the Read Write available state iii Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed iv The specified file system is mounted v This command flushes only the Windows file systems so that the data of applications handling their own cache can...

Page 191: ...nt volume name specified you can also specify mount point drive letter or NTFS folder name at the same time To mount a volume set the specified drive letter or NTFS folder to the target volume Displayed Information The iSMrc_mount command displays messages when Mount starts and ends Start message iSMrc_mount Info iSM13220 Setting drive letter drive volume_name has succeeded Mount Start YYYY MM DD ...

Page 192: ...e output when a drive letter or an NTFS folder name is set Execution Conditions To perform Mount the following conditions must be satisfied i The target volume is registered in the volume list ii The target volume is in the Read Write available state or is a volume changed to the Not Ready state when the iSMrc_umount command unmounts the volume iii Specifying a volume of a dynamic disk or a GPT fo...

Page 193: ...restriction of the disk logical disk to the Not Ready state If the offline option is omitted when the volume to be unmounted is LV it operates in the same way as the offline option is specified When the volume to be unmounted is RV it operates in accordance with the UMOUNT_RVACC parameter setting of the replication operation option setting file Main Options For the iSMrc_umount command the target ...

Page 194: ...arget volume is in the Read Write available state iii Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed iv When the volume to be unmounted is being used by another application unmount operation may be terminated abnormally In this case to cancel reference or update by another application forcibly execute the CHKDSK command with F X specified v On Windows 2000 when...

Page 195: ...fy the disk number to operate in units of disks or you can operate all disks as targets Main Options For the iSMrc_signature command you can specify the following options regarding Disk Signature operation y Saving signature read Saves the disk signature recognized by the Windows system Signatures are recorded in the signature map file managed by the iSMrc_signature command y Writing signature set...

Page 196: ... the read option disk_sig Displays signature information read from the physical disk directly saved_sig Displays signature information saved in the disk array attribute Displays the logical disk attribute for the data replication and snapshot functions link_status Displays the link state when the target physical disk is the link volume LV used for the snapshot function Displays hyphen unless the t...

Page 197: ...rate the pair and put the RV in the Read Write available state then execute the command If the device access restriction is changed to the Not Ready state by unmount of the iSMrc_umount command release the Not Ready state to scan the device Executing this command has the same effect as Rescan Disks by the Disk Management function of Windows Instead of using this command the devices can be recogniz...

Page 198: ...ial map 97 179 differential volume 34 DIRECT 108 direct operation for a disk array 106 director number 37 99 180 disk array 33 disk array icon 29 disk array information display 104 106 disk array link information screen 36 disk array operation command 178 disk array operations 178 disk array properties 97 disk group name 111 disk operation command 181 disk operations 181 disk scanning 104 106 disk...

Page 199: ...orization 24 operation message 24 operation types 105 operations linked with iSM 109 P pair 175 pair disk name 32 pair list 93 pair number 32 pair operation commands 172 pair setting 44 175 pair setting and unpair 104 106 pair setting and unpair operations 172 pair setting and unpairing 175 pair unpair command 175 paired volume state display 104 106 path number 180 path state 37 path status 180 ph...

Page 200: ...y command 169 starting terminating volume list display 127 state monitoring information 110 state synchronized 13 15 state transitions 12 Storage Manager 7 subsystem absolute address 98 suspend 17 suspend copy 63 Sync Execution 13 sync state 13 15 16 33 synchronous copy mode 17 T target ID 113 test environment setting 4 to display the replication state 165 U unmount 185 unpair 46 175 updating disp...

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