HP StorageWorks XP48 - Disk Array Owner'S Manual Download Page 101

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RAID Technology

101

Figure 16. RAID5 with Parity Disk

The downside to RAID0/1 over RAID5 is that there is a 100% overhead on
storage redundancy associated with RAID0/1. RAID0/1 is often referred to
as mirrored storage, because the user data is physically duplicated in the
array.

(10-12)

D11

D10

D12

(7-9)

(4-6)

3D + 1P Array Group

(1-3)

Summary of Contents for StorageWorks XP48 - Disk Array

Page 1: ...HP SureStore E Disk Array XP512 HP SureStore E Disk Array XP48 H Owner s Guide ...

Page 2: ...ave any questions about the warranty for this product contact your dealer or local HP sales representative Trademarks Windows NT Microsoft Windows MS Windows and MS DOS are U S registered trademarks of Microsoft Corporation Other reserved names are trademarks of the respective companies Safety notices Any servicing adjustment maintenance or repair must be performed only by authorized service train...

Page 3: ...el Connectivity 12 ESCON Connectivity 13 Data Integrity 14 Comparing the XP512 to the XP48 16 Websites 18 2 The HP SureStore E Disk Array XP512 Hardware 19 General Safety Guidelines 20 Physical Components 22 Disk Control Frame 24 Control Panel 24 Service Processor 25 Disk Array Frames 26 Available Disk Drives 26 RAID Options 26 Remote Console PC optional 27 Control Panel 30 CONTENTS ...

Page 4: ...ture 42 Humidity 42 Mechanical Vibration 43 AC Line Voltage 43 3 The HP SureStore E Disk Array XP48 Hardware 45 General Safety Guidelines 46 Physical Components 48 Control Panel 51 UNIT EMERGENCY POWER OFF 55 Normal Operations 57 Powering Off the Disk Array 58 UNIT EMERGENCY POWER OFF 58 Planned Power Off 59 Recovering from a Power Outage to the Disk Array 60 Specifications 62 Temperature 62 Humid...

Page 5: ...uous Access XP 70 HP SureStore E Continuous Access Extension XP 70 High Availability 71 HP SureStore E Business Copy XP 71 Failover and Load Balancing 72 HP SureStore E Auto LUN XP 72 HP SureStore E Auto Path XP 72 Performance Monitoring 73 HP SureStore E Performance Manager XP 73 HP SureStore E Performance Advisor XP 73 Network Management 74 HP SureStore E OpenView ITO SPI 74 Mainframe Solutions ...

Page 6: ...I EMC Statement Japan 86 BSMI EMC License Number and Statement Taiwan 87 XP512 87 XP48 87 Harmonics Conformance Japan 88 German Noise Declaration 89 Laser Safety 90 Declaration of Conformity 91 XP512 Declaration of Conformity 92 XP48 Declaration of Conformity 93 A Raid Technology 95 Using RAID0 1 96 Understanding RAID3 98 Using RAID5 99 Configuring Dynamic Spare Disks 103 Glossary 107 Index 117 ...

Page 7: ...7 Revision History June 1 2000 Original release for the HP SureStore E Disk Array XP512 November 7 2000 Addition of the HP SureStore E Disk Array XP48 ...

Page 8: ...st current information about HP SureStore E XP products visit the support web sites at www hp com support xp256 www hp com support xp512 www hp com support xp48 For information about product availability configuration and connectivity consult your HP account representative ...

Page 9: ...56 from HP It provides reliable and secure data protection featuring redundant circuitry and RAID storage options for data security The disk array also supports multiple operating systems platforms and RAID groups The advantages include continuous data availability nondisruptive service and upgrades connectivity scalability data integrity ...

Page 10: ...le point of component failure which enables uninterrupted access to data The disk array has component and function redundancy providing full fault tolerance for disk array microprocessors control storage control and data buses power supplies and cooling fans The disk array can sustain multiple component failures and still continue to provide full access to your stored data While access to your dat...

Page 11: ...e There is no need to be concerned with user serviceable components Only an HP Service Representative should open the cabinets All hardware subassemblies can be removed serviced repaired or replaced nondisruptively during disk array operation All microcode upgrades can be performed during normal disk array operations using your disk array s built in service processor SVP or the facilities of the h...

Page 12: ...256 logical units LUs Your disk array can support up to 8 192 LUNs attached through the Fibre Channel which provides data transfer rates up to 100 MB sec The disk array can support Fibre Channel arbitrated loop FC AL and Fabric Fibre Channel topologies XP48 The XP48 supports a maximum of three pairs of channel adapters that can support up to 24 Fibre Channel ports Each port is assigned a unique TI...

Page 13: ...XP512 and XP48 13 ESCON Connectivity XP512 The XP512 supports a maximum of four pairs of channel adapters that can support 32 ESCON ports XP48 The XP48 supports a maximum of three pairs of channel adapters that can support 24 ESCON ports ...

Page 14: ...ty RAID0 1 RAID5 mirrored write cache dual channel adapters CHAs and array control processors ACPs dual and concurrently active data and control paths through the disk array split power domains on internal data paths hot pluggable boards hot pluggable fans power supplies and controllers upgradable online firmware Following are some of the software features products that complement your disk array ...

Page 15: ...e E Secure Manager XP zero downtime backup HP OmniBack Exchange Oracle or SAP centralized resource management HP SureStore E SAN Manager LM DM Performance Manager XP Performance Advisor XP and Auto LUN XP easy to use interface to access your disk array resources HP SureStore E Remote Control XP I O path failover and load balancing HP SureStore E AutoPath XP To obtain updates to the software go to ...

Page 16: ...le the XP48 ACP is an integral part of the XP48 and cannot be removed or interchanged The following table describes the differences between the XP512 and XP48 disk arrays Table 1 Comparing the XP512 to the XP48 Feature XP512 XP48 Power Single phase or 3 phase Single phase only DKC DKU One DKC Up to 6 DKUs Single cabinet unit only no expansion Maximum hard disk drives 512 48 Maximum spare disk driv...

Page 17: ...re Channel disk drive 18 GB 10K rpm Fibre Channel disk drive Max shared memory 1 28GB 1 0GB ACP pairs 4 1 CHIP pairs 4 3 Configuration disk XP512 specific XP48 specific SVP code XP512 specific XP48 specific RAID level RAID 0 1 3D 1P RAID 5 2D 2D RAID 0 1 3D 1P RAID 5 2D 2D Maximum LDEV 4096 4096 Available LUNs 8192 6144 Maximum LU port 256 256 Table 1 Comparing the XP512 to the XP48 continued Feat...

Page 18: ...ore E Disk Array XP512 XP48 Owner s Guide Websites For the most current information about the XP family of disk arrays visit these websites www hp com support xp256 www hp com support xp512 www hp com support xp48 ...

Page 19: ...19 2 THE HP SURESTORE E DISK ARRAY XP512 HARDWARE ...

Page 20: ...ct damage Understand and follow these hazard warnings fully The hazard warnings that appear on the warning labels on the machine or in the manual have one of the following alert headings consisting of an alert symbol and a signal word Warning or Caution Warning This indicates a potentially hazardous situation which if not avoided can result in death or serious injury The alert symbol shown left pr...

Page 21: ...the tops and sides of the cabinets clear to allow air to flow properly Do not perform any procedures not described in this document If you have any questions or concerns please contact your HP Service Representative Warning Do not touch areas marked HAZARDOUS even with the power off These areas contain high voltage power Keep in mind that the hazard warnings in this manual or on the machine cannot...

Page 22: ...ance RAID capable disk array system It is used to store large quantities of data in an efficient and secure manner Figure 1 HP SureStore E Disk Array XP512 Disk Array Frame 6 Disk Array Frame 4 Disk Array Frame 3 Disk Control Frame Control Panel Disk Array Frame 1 Disk Array Frame 2 Disk Array Frame 5 Optional Remote Control PC ...

Page 23: ...contain your disk drives You can connect up to six disk array frames to your HP SureStore E Disk Array XP512 One service processor SVP The SVP is an internally mounted laptop computer used for maintenance The SVP is located in the disk control frame cabinet The SVP is used by your HP Service Representative only Optional one remote console PC The remote console PC is attached to your disk array by ...

Page 24: ...t is designed with redundant controllers and redundant power supplies all of which can be removed or replaced without interrupting access to your data Only your HP Service Representative can remove or replace hardware Control Panel The control panel is your view to the disk array Once the disk array is powered on and running normally there are no user operations required at the control panel The c...

Page 25: ...tative a method to access the software system on the disk array Your HP Service Representative uses the SVP to configure maintain and upgrade your disk array software and hardware The service processor also collects performance data on the disk array for diagnostic testing and analysis To protect the user s security the SVP does not have access to any user data stored on the disk array ...

Page 26: ... Your disk array uses 3 5 inch disk drives and a variety of disk capacities are available Ask your HP Service Representative about currently available disk drives Any of the disk drives in your disk array frames can be replaced without disrupting user activity The disk array automatically detects and corrects disk errors RAID Options Any of your spare disk drives can back up any other disk drive o...

Page 27: ...ur remote console PC runs a main remote control application and other standard and optional software to manage and monitor the disk array Your remote console PC can be connected to up to eight disk arrays using a special LAN connection See figure 4 page 28 Disk Array Frame 6 Disk Array Frame 4 Disk Array Frame 3 Disk Array Frame 1 Disk Array Frame 2 Disk Array Frame 5 ...

Page 28: ...P512 Disk Array Connections Callout in Figure 4 page 28 Connecting Type 1 A DKC to a DKU a DKU to another DKU Fibre Channel 2 The DKC to external power Power cable 3 The DKC to the host server Fibre Channel ESCON 4 DKC to the Remote Console LAN Optional Remote Control PC Disk Array Disk Array Disk Controller Server Host 4 1 1 2 3 1 1 ...

Page 29: ...the required processor speed storage capacity and memory will vary depending on the optional software that you use and the number of disk array frames you have connected to the system To protect your user s security the RC software for the remote console PC does not have access to any user data stored on the disk array ...

Page 30: ...30 HP SureStore E Disk Array XP512 XP48 Owner s Guide Control Panel Figure 5 page 31 and table 3 page 32 show the control panel and its functions respectively ...

Page 31: ...ENCY RESTART REMOTE MAINTENANCE PROCESSING DISABLE ENABLE STORAGE CLUSTER 2 A C B D BS ON PS ON POWER SW ENABLE ON OFF READY ALARM MESSAGE ON OFF 4 5 6 1 2 3 7 7 8 10 9 8 14 UNIT EMERGENCY POWER OFF 15 11 12 13 FRONT VIEW XP512 F E G K L M H N P Q R N P Q R 7 7 F E G H J K L M 8 8 LED TEST CHK RS T POWER REMOTE LOCAL ...

Page 32: ...abled and your HP Service Representative has been notified 4 SUBSYSTEM RESTART Switch Used to unfence the fenced drive path and to release Write Inhibit There is a blocked path somewhere between a host and a disk drive By restarting the subsystem a soft reset will be performed to try to recover If system restart does not unblock the path an HP Service Representative will be notified 5 REMOTE MAINT...

Page 33: ...stablished 4 Off Indicates that the corresponding channel route is not enabled 8 STORAGE CLUSTER 2 CHANNEL A R ENABLE LED Green Serial Channel Fibre Channel 1 On Indicates some of the logical paths are established 2 Fast blinking Indicates that the corresponding channel route is executing the channel command Only Serial Channel 3 Slow blinking Indicates none of the logical paths are established 4 ...

Page 34: ...off switch turn the PWR SW ENABLE switch to the ENABLE position 12 PWR ON PWR OFF Switch To switch on off the subsystem use this switch while turning the PWR SW ENABLE switch to the ENABLE position This switch is valid when the REMOTE LOCAL switch is set to the LOCAL position 13 UNIT EMERGENCY POWER OFF Switch Used to power off the storage subsystem in an emergency situation 14 PWR ON PWR OFF REMO...

Page 35: ... it up and then pull it toward you as illustrated in figure 6 page 36 Caution Pulling a UNIT EMERGENCY POWER OFF switch on the disk controller instantly shuts down the storage subsystem neglecting the system s power off sequence Jobs in process are aborted and their integrity after recovery is not guaranteed Therefore this method should be used only in an emergency and not in usual maintenance Cau...

Page 36: ...36 HP SureStore E Disk Array XP512 XP48 Owner s Guide Figure 6 Pulling the UNIT EMERGENCY POWER OFF Switch DKC DKC 1 2 UNIT EMERGENCY POWER OFF Control Panel Control Panel Cover PUSH ...

Page 37: ...ts any remote error messages R SIMs to your remote console PC and also sends the report to the HP Service Center automatically The RC software allows the HP Service Representative to view the R SIMs by date and time or by controller and to manage the R SIM log file on the remote console PC For more information on SIMs see Troubleshooting page 77 ...

Page 38: ...ick restart is not necessary In an emergency the operator should trip the UNIT EMERGENCY POWER OFF switch The UNIT EMERGENCY POWER OFF switch is located on the control panel Caution Use this switch only in case of an emergency An HP Service Representative is required to reset the UNIT EMERGENCY POWER OFF and to power on the disk array To power off the disk array in an emergency 1 Open the control ...

Page 39: ...Store E Disk Array XP512 the power off of the disk array must be scheduled with a trained HP support representative Caution Only a trained HP representative can shut down and power off a disk array Shutting down and powering off a disk array is not a customer activity A user should not attempt to power off the disk array at any time other than an emergency When planning for your planned power outa...

Page 40: ...tion of power by an electrician to ensure all phases are restored and input power to the disk is stable The user may opt to call a trained HP representative to recover from the disk array power failure The user may also use the following procedures for disk array power failure recovery 1 Move the REMOTE LOCAL switch on the front panel 14 figure 5 page 31 to the LOCAL position The normal position i...

Page 41: ...ng on the disk array may take upwards of 10 minutes depending on the number of disks installed in your disk array Power on is complete only when the READY LED turns green 4 Move the REMOTE LOCAL switch on the front panel 14 figure 5 page 31 to the REMOTE position ...

Page 42: ... C 32 Nonoperating storage temperature range 10 to 43 C Operating temperature 16 to 32 C Recommended operating temperature range 21 to 24 C Shipping and storage temperature 25 to 60 C Temperature shock immunity maximum rate of change 10 C per hour Over temperature shutdown Shutdown at 60 C Table 5 Humidity Specifications Humidity Specifications Nonoperating storage humidity range 5 to 95 RH Operat...

Page 43: ...imum operating voltage vac 212 220 244 Rated line current DKU arms 12 3 11 9 10 6 Rated line current DKC arms 5 7 5 6 5 2 Dropout carry through time at minimum line voltage ms 500 500 500 Table 7 1 Phase 50 Hz Operation Specification 50 Hz V1 50 Hz V2s 50 Hz V3 50 Hz V4 Nominal rated voltage vac 200 220 230 240 Minimum operating voltage vac 184 202 212 221 Maximum operating voltage vac 212 233 244...

Page 44: ... 14 7 13 2 Dropout carry through time at minimum line voltage ms 500 500 500 Table 9 3 Phase 50 Hz Operation 50 Hz V1 50 Hz V2s 50 Hz V3 50 Hz V4 50 Hz V5 50 Hz V6 50 Hz V7 Nominal rated voltage vac 200 220 230 240 380 400 415 Minimum operating voltage vac 184 202 212 221 350 368 382 Maximum operating voltage vac 212 233 244 254 403 424 440 Rated line current arms 15 13 8 13 2 12 6 9 9 9 6 9 5 Dro...

Page 45: ...45 3 THE HP SURESTORE E DISK ARRAY XP48 HARDWARE ...

Page 46: ...t damage Understand and follow these hazard warnings fully The hazard warnings that appear on the warning labels on the machine or in the manual have one of the following alert headings consisting of an alert symbol and a signal word Warning or Caution Warning This indicates a potentially hazardous situation which if not avoided can result in death or serious injury The alert symbol shown left pre...

Page 47: ...he tops and sides of the cabinets clear to allow air to flow properly Do not perform any procedures not described in this document If you have any questions or concerns please contact your HP Service Representative Warning Do not touch areas marked HAZARDOUS even with the power off These areas contain high voltage power Keep in mind that the hazard warnings in this manual or on the machine cannot ...

Page 48: ... 7 HP SureStore E Disk Array XP48 Your disk array has the following major hardware components disk array cabinet The single disk array frame cabinet contains the control panel connection hardware the service processor control boards and hard disk drives one service processor SVP The SVP is a built in PC inside the disk array cabinet The SVP gives your HP Service Representative a method to access t...

Page 49: ...control panel except in the case of a power failure recovery The control panel will be discussed in further detail on page 51 hard disk drives Your disk array uses 3 5 inch disk drives and different disk capacities are available Ask your HP Service Representative about currently available disk drives or visit the XP48 website at www hp com support xp48 Any of the disk drives in your disk array fra...

Page 50: ...h as the required processor speed storage capacity and memory will vary depending on the optional software that you use and the number of disk array frames you have connected to the system To protect your users security the remote control software for the remote console PC does not have access to any user data stored on the disk array There is no single point of failure in the disk array It is des...

Page 51: ...Control Panel A F C B D E G H J K L M A F C B D E G H J K L M STORAGE CLUSTER 1 SUB SYSTEM POWER REMOTE LOCAL EMERGENCY LED TEST CHK RS T RESTART REMOTE MAINTENANCE PROCESSING DISABLE ENABLE STORAGE CLUSTER 2 BS ON PS ON POWER SW ENABLE ON OFF READY ALARM MESSAGE ON OFF 4 5 6 1 2 3 7 7 7 8 10 9 8 8 14 UNIT EMERGENCY POWER OFF 15 11 12 13 FRONT VIEW XP48 ...

Page 52: ...abled and your HP Service Representative has been notified 4 SUBSYSTEM RESTART Switch Used to unfence the fenced drive path and to release Write Inhibit There is a blocked path somewhere between a host and a disk drive By restarting the subsystem a soft reset will be performed to try to recover If system restart does not unblock the path an HP Service Representative will be notified 5 REMOTE MAINT...

Page 53: ...tablished 4 Off Indicates that the corresponding channel route is not enabled 8 STORAGE CLUSTER 2 CHANNEL A R ENABLE LED Green Serial Channel Fibre Channel 1 On Indicates some of the logical paths are established 2 Fast blinking Indicates that the corresponding channel route is executing the channel command Only Serial Channel 3 Slow blinking Indicates none of the logical paths are established 4 O...

Page 54: ...ff switch turn the PWR SW ENABLE switch to the ENABLE position 12 PWR ON PWR OFF Switch To switch on off the subsystem use this switch while turning the PWR SW ENABLE switch to the ENABLE position This switch is valid when the REMOTE LOCAL switch is set to the LOCAL position 13 UNIT EMERGENCY POWER OFF Switch Used to power off the storage subsystem in an emergency situation 14 PWR ON PWR OFF REMOT...

Page 55: ...rd you as illustrated in figure 10 page 56 Caution Pulling the UNIT EMERGENCY POWER OFF switch on the disk array cabinet instantly shuts down the array neglecting the system s power off sequence Jobs in process are aborted and their integrity after recovery is not guaranteed Therefore this method should be used only in an emergency and not in normal operation Caution The UNIT EMERGENCY POWER OFF s...

Page 56: ...56 HP SureStore E Disk Array XP512 XP48 Owner s Guide Figure 10 Pulling the UNIT EMERGENCY POWER OFF Switch ...

Page 57: ...s any remote error messages R SIMs to your remote console PC and also sends the report to the HP Service Center automatically The RC software allows the HP Service Representative to view the R SIMs by date and time or by controller and to manage the R SIM log file on the remote console PC For more information on SIMs see Troubleshooting page 77 ...

Page 58: ...tart is not necessary In an emergency the operator should trip the UNIT EMERGENCY POWER OFF switch The disk array UNIT EMERGENCY POWER OFF switch is located on the control panel Caution Use this switch only in case of an emergency An HP Service Representative is required to reset the UNIT EMERGENCY POWER OFF and to power on the disk array To power off the disk array in an emergency 1 Open the cont...

Page 59: ... HP SureStore E Disk Array XP48 the power off of the disk array must be scheduled with a trained HP support representative Caution Only a trained HP representative can shut down and power off a disk array Shutting down and powering off a disk array is not a customer activity A user should not attempt to power down the disk array at any time other than an emergency When planning for your planned po...

Page 60: ...tion of power by an electrician to ensure all phases are restored and input power to the disk is stable The user may opt to call a trained HP representative to recover from the disk array power failure The user may also use the following procedures for disk array power failure recovery 1 Move the REMOTE LOCAL switch on the front panel 14 figure 9 page 51 to the LOCAL position The normal position i...

Page 61: ...ng on the disk array may take upwards of 10 minutes depending on the number of disks installed in your disk array Power on is complete only when the READY LED turns green 4 Move the REMOTE LOCAL switch on the front panel 14 figure 9 page 51 to the REMOTE position ...

Page 62: ...rees F 1 8 x Degrees C 32 Nonoperating temperature range 10 to 43 C Operating temperature 16 to 32 C Recommended operating temperature range 21 to 24 C Shipping and storage temperature 25 to 60 C Temperature shock immunity maximum rate of change 10 C per hour Over temperature shutdown Shutdown at 60 C Table 12 Humidity Specification Humidity Specification Nonoperating storage humidity range 8 to 9...

Page 63: ...230 Minimum operating voltage vac 184 191 212 Maximum operating voltage vac 212 220 244 Rated line current arms 8 8 8 5 7 8 Dropout carry through time at minimum line voltage ms 500 500 500 Table 14 1 Phase 50 Hz Operation Specification 50 Hz V1 50 Hz V2s 50 Hz V3 50 Hz V4 Nominal rated voltage vac 200 220 230 240 Minimum operating voltage vac 184 202 212 221 Maximum operating voltage vac 212 233 ...

Page 64: ...64 HP SureStore E Disk Array XP512 XP48 Owner s Guide Website For the most current information on the XP48 please visit the XP48 website at www hp com support xp48 ...

Page 65: ...HP designed to increase your data accessibility and enable continuous user data access to your disk array This chapter describes how these optional software applications help you to run your disk array system Before installing the optional software packages refer to the specific software manual to verify equipment requirements ...

Page 66: ...eration of management and the ability to manage multiple disk arrays Command View provides common web GUI interface across XP platforms quick installation via InstallShield the ability to manage your storage resources from any location enabling the remote expert to participate in problem management without traveling visual representation of host and storage resources view status and health of stor...

Page 67: ...h security on your disk array HP SureStore E Secure Manager XP Secure Manager establishes security at the LUN level allowing you to enable multiple server connectivity to the disk array Secure Manager XP works through the native Fibre Channel enabling the disk array to hide LUNs assigned to one server from other servers during IOSCAN operations ...

Page 68: ...e applications that are executed on the SureStore E Command View console or your remote control PC LUN Configuration Manager enables LUN creation and port assignment consolidation of LUNs up to 36 LUNs can be combined creation of small size LUNs to accommodate data locked into cache HP SureStore E Remote Control XP Included with HP SureStore E Command View XP is Remote Control which provides custo...

Page 69: ...The HP SureStore E Disk Array XP Family of Optional Software 69 Figure 11 Remote Control XP Menus ...

Page 70: ...t to a remote site up to 27 miles 43 kilometers away Remote Access includes host specific software that enables you to have full user control from the host server via a command line interface HP SureStore E Continuous Access Extension XP Continuous Access Extension XP enables a high performance asynchronous copy mode that allows confirmation of host write operations between your local disk array a...

Page 71: ...s enabled by using the optional Business Copy XP software HP SureStore E Business Copy XP Business Copy XP allows you to enable multiple mirroring capabilities to create a total of 10 images including the original Use Business Copy for nonproduction activities such as backup batching and system testing ...

Page 72: ... lower usage LUNs using the data acquired during the monitoring function You can perform the migration manually or automatically or you can set it to complete with the approval of the user HP SureStore E Auto Path XP Using Auto Path XP you can enable Windows NT server I O path failover and load balancing control for dual path connections You can configure up to eight multiple paths per LUN that wi...

Page 73: ...our hardware performance cache statistics and I O statistics of your attached disk arrays You can display real time and historical data as graphs using the Performance Manager HP SureStore E Performance Advisor XP HP SureStore E Performance Advisor XP is an Internet application used to collect and monitor real time performance of the HP SureStore E XP family of disk array products Using a simple b...

Page 74: ... the SureStore E OpenView ITO SPI software HP SureStore E OpenView ITO SPI SureStore E OpenView ITO SPI establishes an agent that resides on your remote control PC agent monitors the disk array provides a correlation of events on the disk array and then forwards those events to the OpenView ITO management console ...

Page 75: ...ce Manager allows you to share data stored on the disk array with mainframe systems as well as open system servers This reduces and optimizes your storage maintenance and management overhead HP SureStore E Data Exchange XP Data Exchange XP provides high speed bidirectional data sharing between mainframe systems via the ESCON links and the SCSI links on open systems File translations are provided t...

Page 76: ...76 HP SureStore E Disk Array XP512 XP48 Owner s Guide ...

Page 77: ...77 5 TROUBLESHOOTING This chapter explains the monitoring and reporting capabilities and the flow of troubleshooting used on the HP SureStore E XP Family of disk arrays ...

Page 78: ...SIMs to identify normal operations service requirements and failures SIMs can be generated on your disk array by the CHIP Client Host Interface Processor and ACP array control processor microprocessors and by the internal service processor SVP Your HP Service Representative will use the SIMs to monitor and troubleshoot your disk array ...

Page 79: ...ort Center When a SIM is generated the amber message LED on your disk array control panel turns on The R SIM feature of the remote console PC allows you to view the R SIMs reported by the disk array from your remote console PC and from the open system host The R SIM feature uses the simple network management protocol SNMP for complete remote disk array management The remote console PC displays a w...

Page 80: ...ool reports the SIMs to the HP Stress Free Central Support Center through a dedicated dial up connection The HP Stress Free Central Support Center then takes action to correct the failure Figure 12 Error Detection and Reporting SIM Log SSB Log Stress Free Central SIM SIM RC SSB Failure SSB 4 3 2 1 ...

Page 81: ...81 6 REGULATORY STATEMENTS The following regulatory statements relate to both the HP SureStore E XP512 and the HP SureStore E XP48 disk arrays unless otherwise noted ...

Page 82: ...al area is likely to cause harmful interference in which case the user will be required to correct the interference at his or her own expense The end user of this product should be aware that any changes or modifications made to this equipment without the approval of Hewlett Packard could result in the product not meeting the Class A limits in which case the FCC could void the user s authority to ...

Page 83: ...ulatory Statements 83 IEC Statement Worldwide This is a Class A product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures ...

Page 84: ...e EMC Statement Canada This Class A digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations Cet appareil numérique de la Classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada ...

Page 85: ...ECLARATION D INSTALLATION ET DE MISE EN EXPLOITATION d un matériel de traitement de l information ATI classé A en fonction des niveaux de perturbations radioélectriques émis définis dans la norme européenne EN 55022 concernant la Compatibilité Electromagnétique ...

Page 86: ...86 HP SureStore E Disk Array XP512 XP48 Owner s Guide VCCI EMC Statement Japan ...

Page 87: ...Regulatory Statements 87 BSMI EMC License Number and Statement Taiwan XP512 XP48 ...

Page 88: ...88 HP SureStore E Disk Array XP512 XP48 Owner s Guide Harmonics Conformance Japan ...

Page 89: ...atements 89 German Noise Declaration XP512 Schalldruckpegel Lp 62 dB A XP48 Schalldruckpegel Lp 59 dB A Am Arbeitsplatz operator position Normaler Betrieb normal operation Nach ISO 7779 1988 EN 27779 1991 Typprüfung ...

Page 90: ...ied as a Class 1 laser product conforming to the requirements contained in IEC 825 1 1993 and EN 60825 1 1994 including Amendment 11 1996 The following figure shows the Class 1 information label that appears on the plastic housing of the OLM Each communications port consists of a transmitter and receiver optical subassembly The transmitter subassembly contains internally a semiconductor laser diod...

Page 91: ...Regulatory Statements 91 Declaration of Conformity The following declarations pertain to the XP512 and the XP48 respectively ...

Page 92: ... A11 GB 4943 1995 IEC 825 1 1993 A1 EN 60825 1 1994 A11 Class 1 Laser LED EMC CISPR 22 1997 EN 55022 1998 Class A1 GB 9254 1988 CISPR 24 1997 EN 55024 1998 IEC 61000 3 2 1995 EN 61000 3 2 1995 IEC 61000 3 3 1994 EN 61000 3 3 1995 Supplementary Information The product herewith complies with the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 336 EEC and carries the CE m...

Page 93: ...C 825 1 1993 A1 EN 60825 1 1994 A11 Class 1 Laser LED EMC CISPR 22 1997 EN 55022 1998 Class A1 GB 9254 1988 CISPR 24 1997 EN 55024 1998 IEC 61000 3 2 1995 EN 61000 3 2 1995 IEC 61000 3 3 1994 EN 61000 3 3 1995 Supplementary Information The product herewith complies with the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 336 EEC and carries the CE marking accordingly 1...

Page 94: ...94 HP SureStore E Disk Array XP512 XP48 Owner s Guide ...

Page 95: ...nd disk volumes These divisions are used to safeguard data and to make the most efficient use of your disk drive space Two RAID types are supported on the XP512 and XP48 Which RAID type you need depends on the type of data storage solution you require In most situations RAID0 1 will have better performance over RAID5 If the host application is write intensive there should not be many if any perfor...

Page 96: ... is written out to your secondary disk After the writes to both disks have completed the write cache is released RAID1 arrays are fault tolerant but they have lower performance than RAID0 arrays As mentioned earlier RAID0 1 adds the high I O performance features of RAID0 striping to the high reliability features of mirrored storage of RAID1 RAID0 1 uses all four disks in an array group for the pri...

Page 97: ...RAID Technology 97 Figure 13 RAID0 1 Array Group Data 2D 2D Array Group RAID0 1 is a striped and mirrored copy within an ACP pair Mirror Mirror Mirror Mirror Data Data Data LUN0 LUN1 LUNn ...

Page 98: ...ive called a parity drive This improves the safety of your data because the parity information can be used to recover the data even if one of the drives in a parity group has become inoperative or has read errors Because RAID3 does not have parallel input output capability it must drive two or more drives at the same time This causes poor performance in applications that process small data files o...

Page 99: ...proach permits increased I O performance This makes RAID5 ideal for transaction processing In large scale sequential input output operations RAID5 permits parallel processing of the parity blocks which increases the data transfer rate In small scale input output operations though RAID5 must perform extra read operations from the data and parity disks This slows the transfer rate and is called writ...

Page 100: ...antially In small scale or random I O applications the data transfer rate remains the same as conventional RAID systems In large or sequential I O applications RAID5 permits the blocks in the same parity group to be processed in parallel resulting in an increase in the data transfer rate For small writes to single blocks RAID5 requires extra reads from the data and parity disks before a small bloc...

Page 101: ...ver RAID5 is that there is a 100 overhead on storage redundancy associated with RAID0 1 RAID0 1 is often referred to as mirrored storage because the user data is physically duplicated in the array P 10 12 D11 D10 D12 P 7 9 D7 D9 D8 P 4 6 D6 D5 D4 3D 1P Array Group P 1 3 D1 D2 D3 ...

Page 102: ...of the array with a RAID5 implementation RAID5 achieves the storage redundancy by generating parity data based on the data stored RAID5 only requires a 33 storage overhead Table 15 RAID Array Usage and Overhead RAID Type Disk Usage Overhead RAID 0 1 2 disks 2 disks 100 RAID 5 3 disks 1 parity drive 33 ...

Page 103: ...ta integrity checking Figure 17 Normal Data Read Operation If a drive error occurs during an I O operation from a host the system can recover the target data using parity data and data stored on the other nonfailing drives The data can be recovered even when the array subsystem cannot read the data because of errors occurring on the physical drives This feature ensures nondisruptive processing of ...

Page 104: ...se error count exceeds a specified limit value Since this processing is done in the background the array can continue to accept host I O requests The data saved on spare disks is copied back into the original location after the drive with errors has been replaced with a new one DKC RAID5 M8 D6 D8 M6 M7 D5 D7 M5 M4 D2 D4 M2 M3 D1 D3 M1 P 10 12 D11 D10 D12 P 7 9 D7 D9 D8 P 4 6 D6 D5 D4 P 1 3 D1 D2 D...

Page 105: ... when the system encounters an unrecoverable error occurring on a drive In RAID5 correction copy will regenerate the original data for that drive using the data from the other two drives and the parity data and then the controller copies the regenerated data onto the spare disk In RAID0 1 correction copy just has to copy the data from the mirrored disk onto the spare disk After a failed disk has b...

Page 106: ...106 HP SureStore E Disk Array XP512 XP48 Owner s Guide ...

Page 107: ...ess Copy XP software BS basic supply BSA BUS Adapter Hardware that connects the PCBs FBUS and MBUS BTU British thermal unit C degrees centigrade Celsius CA XP SureStore E Continuous Access XP software ca cache cache Intermediate buffer between the channels and drives It is available and controlled as two areas of cache cache A and cache B It is fully battery backed 48 hours CE customer engineer CF...

Page 108: ... for optical channels and the other for metal channels The CHA PCB for optical channels is provided with the LCM in its optical link control unit CHP channel processor or channel path CHIP Client Host Interface Processor CHPID channel path identifier CKD count key data CL cluster CM Cache Memory See cache COLD Status that the battery is off CPM Short for Cache Port Master Part of the cluster for m...

Page 109: ...ntrols data transfer between the buffers in the DKA and cache DMA2 Controls data transfer between the buffers in the DKA and drives DMP Disk Master Program A RAID control layer that provides cache control logical to physical addresstranslation and RAID control functions DMP is locatedin the DKA DMP is recognized by the logical volume number and logical blocked number dr drive DRIVE Represents a SC...

Page 110: ...a Exchange software FDR fast dump restore ft foot feet F M format message FBA fixed block architecture FWD fast wide differential FBUS Fast I O BUS Carries the data that is transferred between the adapter and cache It is duplexed using two physical buses H and L sides each of which provides a data transfer rate of 200 MB per second The L side bus is also used to access shared memory during interpr...

Page 111: ...tion or device IOCP input output configuration program JCL job control language KB kilobyte kcal kilocalorie kg kilogram km kilometer kVA kilovolt ampere kW kilowatt LAN local area network lb pound LCM Link Control Module Provideslinkcontrolfunctionssuchasconversionofformatsbetweenoptical and metal channel interfaces The LCM contains an internal processor LCP and 2 KB of buffer memory LCP Link Con...

Page 112: ...SE Logical Unit Size Expansion LVI logical volume image LVM Logical Volume Manager m meters main task Consists of the control tasks of this subsystem CHA Prog DMP DSP and the SC kernel tasks that supervise the DKC control tasks They switch the control tasks by making use of the task switching facility of the SC kernel MB megabytes MBUS Multi CPU BUS Used to support interprocessor communication bet...

Page 113: ...ynamic address switching PC personal computer PCI power control interface PM Performance Manager software P P point to point PPRC Peer to Peer Remote Copy PS power supply R S Russel Stoll RAID redundant array of independent disks RAM random access memory Real Time OS AbasicOS for controllingthe RISC processor Itsprimarytasksaretocontrol and switch between the main tasks and SVP communication tasks...

Page 114: ...bsystem and the cache control information director names This type of information is used for the exclusive control of the subsystem Like cache shared memory is controlled as two areas of memory and fully nonvolatile sustained for approximately 96 hours SIM service information message SMS System Managed Storage SNMP simple network management protocol SSID storage subsystem identification SVP servi...

Page 115: ...band Deutscher Elektrotechniker VM Virtual Machine an IBM S 390 system control program VOLID volume ID volser volume serial number VSC Volume Size Configurator also called CVS Custom Volume Size VSE Virtual Storage Extension an IBM S 390 operating system VTOC volume table of contents XA System 370 Extended Architecture XDF Extended Distance Feature for ExSA channels XRC Extended Remote Copy ...

Page 116: ...116 HP SureStore E Disk Array XP512 XP48 Owner s Guide ...

Page 117: ...14 support 14 disaster recovery Continuous Access Extension XP 70 Continuous Access XP 70 disk array XP512 available disk drives 26 disk array features connectivity 12 continuous data availability 10 data integrity 14 ESCON connectivity 13 Fibre Channel connectivity 12 hardware features 14 LUNs 12 nondisruptive service and upgrades 11 software and solution integration 15 software features products...

Page 118: ... normal operations 57 physical components 22 RAID options 26 UNIT EMERGENCY POWER OFF 35 UNIT EMERGENCY POWER OFF procedure 55 XP48 available disk drives 49 XP48 control panel 51 XP48 disk control frame 48 XP48 physical components 48 XP48 remote console 49 XP48 service processor 48 XP48 specifications 62 XP512 available disk drives 26 XP512 control panel 30 XP512 disk control frame 24 XP512 major ...

Page 119: ...ace processor 78 remote console PC 79 service information messages 79 SIM classification 79 N network management products OpenView ITO SPI 74 O operations XP48 general safety guidelines 46 XP48 hazard warnings 46 XP48 safety precautions 46 XP48 UNIT EMERGENCY POWER OFF switch 47 XP512 general safety guidelines 20 XP512 hazard warnings 20 XP512 safety precautions 20 XP512 UNIT EMERGENCY POWER OFF s...

Page 120: ...le 102 RAID0 1 96 RAID3 98 RAID5 99 regulatory statements ATI Classe A 85 BSMI EMC 87 EMC Statement 84 FCC EMC statement 82 German noise declaration 89 harmonics conformance 88 IEC statement 83 laser safety 90 VCCI EMC 86 remote console XP48 hardware requirements 50 XP512 hardware requirements 29 S safety precautions UNIT EMERGENCY POWER OFF 35 XP48 general safety guidelines 46 XP48 hazard warning...

Page 121: ... warnings XP48 high voltage power 47 XP512 high voltage power 21 web based console HP SureStore E Command View XP 66 X XP48 disk array available disk drives 49 BSMI EMC 87 control panel 51 disk control frame 48 hazard warnings 46 major hardware components 49 normal operations 57 normal power off 59 normal power on 60 physical components 48 safety precautions 46 service processor 48 specifications ...

Page 122: ...r off 39 normal power on 40 physical components 22 remote console 27 safety precautions 20 service processor 25 specifications 42 UNIT EMERGENCY POWER OFF 35 UNIT EMERGENCY POWER OFF procedure 38 XP512 disk array frames 23 XP512 disk control frame control panel 24 XP512 normal power off 39 XP512 normal power on 40 XP512 power on 40 XP512 UNIT EMERGENCY POWER OFF 58 XP512 UNIT EMERGENCY POWER OFF s...

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Page 124: ...TAGE WILL BE PAID BY ADDRESSEE Attention Information Engineering MS 5668 HPSO Hewlett Packard Company 8000 Foothills Blvd Roseville CA 95747 9987 NO POSTAGE NECESSARY IF MAILED IN THE UNITED STATES b595196170b Fold Here Tape Please Do Not Staple Tape Please Do Not Staple ...

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