Hp XP RAID Manager Software Manual do Utilizador Página 1

HPP9000 Snapshot User GuideAbstractThis guide explains how to use HP P9000 Snapshot Software to create space-efficient point-in-time copies of data vo

2 Planning and designThis chapter describes requirements for setting up and using Snapshot, as well as data pool sizinginformation.System requirements

Table 1 System Requirements (continued)RequirementItemMaximum numberof pool volumes• P-VOL: 16,384• V-VOL: 16,384• Data pool: 8,192128Maximum numberof

• Volumes with Protect or Read Only attribute, or the “S-VOL Disable” setting (Data Retention)•Also, observe the following• External and internal volu

Figure 5 Basic Factors for Data Pool SizingIn addition, when finalizing a data pool’s capacity, it is advisable to factor in the following:• A safety

Table 2 Shared memory and number of differential tablesnumber of differential tablesShared Memory26,176Base (without shared memory)104,768Extension 12

Calculating maximum pairs based on V-VOL management area shared memoryThis section helps you calculate the number of pairs allowed based on the amount

NOTE: You can check the capacity of the shared memory of pool association and poolmanagement block information in Remote Web Console's Snapshot w

= 535,577,952S1 = 751,619,276 – 535,577,952 = 216,041,324Total capacity of P-VOLs (kB) = ceil[(216,041,324 ÷ 8,736)] × 2,048 × 256 = ceil[24,73

You can minimize the effects of the external-volume failure by adhering to the followingrecommendation:•• Specify external volumes from only one exter

3 Sharing Snapshot volumesThis chapter discusses other program product volumes that can be shared with a Snapshot P-VOL.Interoperability with other pr

© Copyright 2010, 2011 Hewlett-Packard Development Company, L.P.Confidential computer software. Valid license from HP required for possession, use or

• If the S-VOL Disable attribute is currently set on a volume, the volume cannot be used as aV-VOL in a subsequent paircreate operation.• If the S-VOL

Copy pair status changes from PSUS while splitting pairs in a consistency group, the Snapshotdata cannot keep consistency.Table 8 BC Operations when P

with these systems, according to the status of the shared pair, and vice versa. The following tablesshow the relationship between pair operations and

Table 13 Cnt Ac-S/Cnt Ac-J Operations when P-VOL shared with SS S-VOL (continued)Snapshot Pair StatusContinuous AccessSynchronous / ContinuousAccess J

Thin ProvisioningWhen sharing Snapshot, Thin Provisioning, and Thin Provisioning Z volumes, note the following:• Thin Provisioning pools (including Sm

4 Installation and configurationThis chapter provides instructions and information for installing and configuring Snapshot.Installing and uninstalling

a. In the Drive Type/RPM list, select your system’s hard disk drive type and rpm.b. In the RAID Level list, select the system’s RAID level.If you sele

To create a V-VOL:1. Tab window to make LDEVs.• LDEV tab when selecting Logical devices.• Pools tab when selecting Pools.2. Click Create LDEVs.3. In t

5 Pair operationsThis chapter provides instructions for performing pair operations. All other Snapshot pair operationsare performed using RAID Manager

To create Snapshot pair, run the RAID Manager paircreate command. See the HP P9000 RAIDManager Installation and Configuration User Guide for instructi

Contents1 Overview...6Snapshot software...

Resynchronizing a pairWhen a pair is resynchronized, the data in the data pool is deleted, and the V-VOL again mirrorsthe current data in the P-VOL. A

3. In the Pair Operation window tree, select the port or host group that contains the pairs youwant to delete.4. In the volume list, select the Snapsh

6 Monitoring and maintenanceThis chapter provides information and instructions for monitoring and maintaining the Snapshotsystem.Monitoring the system

Table 15 Pair Status DefinitionsV-VOL accessP-VOL accessDescriptionStatusNo R/WYesThe volume is not assigned to a pair.SMPLNo R/WYesThe initial copy i

To check pair and volume details:1. In the Remote Web Console, click Actions > Local Copy > Business Copy/Snapshot > PairOperation.2. In the

Table 17 Fields in the Detail dialog box (continued)DescriptionsItemsUpdates the information in the Detail dialog box.Refresh buttonCloses the Detail

Table 18 Fields in S-VOL Path dialog box (continued)DescriptionsItems• CCC: LU number• XX:YY:ZZ: LDKC number:CU number: LDEV numberPath information fo

Table 19 Items of Information dialog box (continued)DescriptionsItemsThe number of reserved volumes of Business Copy will be displayed in the format o

5. If there are many records of operations, click the scroll button. The list will scroll and you willbe able to see the operation history that has no

Maintaining the systemSome maintenance tasks are a response to behavior discovered during system monitoring. Othertasks are performed to change settin

6 Monitoring and maintenance...32Monitoring the system...

4. In the Select Pool Volumes window>Available Pool Volumes table, select the pool-VOLsyou want in the table.- To select all pool-VOLs in the list,

6. Click Finish.7. In the Confirm window’s Task Name text box, enter the task name.8. Click Apply.Deleting pools1. In the Remote Web Console tree, sel

Deleting V-VOLsPrerequisite information• To be deleted, a V-VOL cannot be part of a Snapshot pair. The pair must first be deletedbefore the V-VOL can

7 TroubleshootingThis chapter provides troubleshooting information.General troubleshootingTable 20 Troubleshooting for SnapshotCauses and SolutionsPro

Table 20 Troubleshooting for Snapshot (continued)Causes and SolutionsProblemCauses:Cannot create Snapshot pairs.• There are not enough differential ta

Table 20 Troubleshooting for Snapshot (continued)Causes and SolutionsProblemCauses:Pairsplit on a consistency groupterminates abnormally• All pairs in

Recovering a blocked poolWhen a pool is blocked, recovery must be performed in this order: pool-VOLs, pool, pairs, V-VOLs.1. To recover a blocked pool

Figure 11 Example of a Log Displayed on the RAID Manager Window2. Locate the SSB1 and SSB2 codes. In the example above, the error codes appear on the

Table 21 RAID Manager error codes for SSB1: B901, B9A8, B9A9, B9AD, B9AE (continued)Cause of ErrorRAID ManagerCommandSSB2Since the capacity of the pai

Table 21 RAID Manager error codes for SSB1: B901, B9A8, B9A9, B9AD, B9AE (continued)Cause of ErrorRAID ManagerCommandSSB2Since the volume you specifie

Top window when selecting a pool volume group under Pool...72Create Pools wizard...

Table 21 RAID Manager error codes for SSB1: B901, B9A8, B9A9, B9AD, B9AE (continued)Cause of ErrorRAID ManagerCommandSSB2Since you specified Continuou

Table 21 RAID Manager error codes for SSB1: B901, B9A8, B9A9, B9AD, B9AE (continued)Cause of ErrorRAID ManagerCommandSSB2Since you specified the Auto

Table 21 RAID Manager error codes for SSB1: B901, B9A8, B9A9, B9AD, B9AE (continued)Cause of ErrorRAID ManagerCommandSSB2Since quorum disks are specif

8 Support and other resourcesContacting HPFor worldwide technical support information, see the HP support website:http://www.hp.com/supportBefore cont

• http://www.hp.com/service_locator• http://www.hp.com/support/manuals• http://www.hp.com/support/downloads• http://www.hp.com/storage/whitepapersConv

Table 22 Document conventions (continued)ElementConventionMonospace text• File and directory names• System output• Code• Commands, their arguments, a

A RAID Manager command referenceThis chapter describes RAID Manager commands corresponding to Actions in GUI.Action names and RAID Manager commands li

B Snapshot GUI referenceThis appendix describes Snapshot windows and dialog boxes in Remote Web Console.NOTE: P-VOL and S-VOLs listed in the Remote We

DescriptionItem: host group: LUN or SMPL volume: Snapshot pairShows the operation(s) you have specified but not yet applied to the system. You can cha

DescriptionItemThe pair’s consistency group number. When the consistency group is not specified, dotted lines(---) display.CTGDisplays the status of t

1 OverviewUnless otherwise specified, the term P9000 in this guide refers to the following disk array:• P9500 Disk ArrayThe GUI illustrations in this

Table 23 Preview list (continued)DescriptionFieldS-VOL information displays in AAA-BB-CCC(XX:YY:ZZ)XX:YY:ZZ format.S-VOL• AAA is the port ID (cluster

DescriptionsItemsDisplays volumes for the selected cache logical partition (CLPR). If you select All, the volumesin all the CLPRs are displayed.CLPRDi

DescriptionsItemsP-VOL LDKC number, CU number, and LDEV numberP-VOLP-VOL emulation typeEmulationP-VOL capacity in megabytes (MB).Capacity(MB)P-VOL’s n

See the following for complete instructions:• “Deleting multiple pairs related to a port or host group” (page 30)• “Deleting multiple pairs related to

DescriptionsItemsCloses the Pairsplit-S dialog box and displays the list of the Snapshot pairs in the Preview list.OKCancels the operation and closes

DescriptionitemThe operation’s S-VOL (V-VOL), identified by LDKC:CU:LDEV.S-VOLA device ID ending in V(e.g., 00:00:01 V) indicates the LDEV is a virtua

DescriptionItemThe pools in the storage system display with the following icons:Tree• : disk subsystem (storage system)• Pool:X : pool in normal statu

DescriptionItem• S-VOL: port ID, the group number of host group, and LUN (LDKC number, CU number, andLDEV number of the volume) of the S-VOLFor S-VOL

DescriptionItembox. For details about the list of the error code of Snapshot, see the HP P9000 Remote WebConsole Messages.Cancels all operations in th

DescriptionItemShows the information about Thin Provisioning capacity.• Pool capacity (Usage/Total): Shows the pool capacity (Usage/Total) of ThinProv

to data in the data pool and P-VOL actually reside in cache memory. Because of this, part of yoursystem’s cache is reserved for Snapshot when it is en

DescriptionItemNormal: The pool is in a normal status.Warning: The pool-VOL in the pool is blocked.Exceeded Threshold: The used capacity of the pool e

DescriptionItemShows CLPR setting for the pool volumes. For THP pools, a hyphen (-) is displayed.CLPRShows whether the pool-VOL can be deleted. For a

Top window when selecting a pool volume group under PoolSummaryDescriptionItemShows the following information about the pool status.StatusNormal: The

DescriptionItemShows the pool type.Pool Type• For Thin Provisioning or Smart Tiers:THP is displayed.• For Snapshot:Snapshot is displayed.Shows the RAI

DescriptionItemShows the parity group ID.Parity Group IDShows available capacity of page boundaries in a pool-VOL by the specifiedunit. For the top po

Setting fieldsDescriptionItemSelect the pool type.Pool Type*For Thin Provisioning or Smart Tiers:Select Thin Provisioning.For Snapshot:Select Snapshot

DescriptionItemSet the pool name.Pool Name*• Prefix: Enter the alphanumeric characters, which are fixed characters of thehead of the pool name. The ch

DescriptionItemTier 3: Sets buffer space for new page assignment for tier 3 from 2% to 40%.The default value is 2%.This function can be set only when

DescriptionItemIf multiple types of drives exist in a pool, this field indicates that the drive typesare mixed.Subscription limit of the pool.Subscrip

Confirm windowCreate Pools tableDescriptionItemShows the nickname and ID of the pool.Pool Name (ID)Shows the RAID level.RAID LevelShows the pool capac

ComponentsA Snapshot system usually consists of the following components.• Snapshot program product• Business Copy program product• A pair of volumes

DescriptionItemShows the Smart Tiers information. If Smart Pool is not set to enable, a hyphen(-) is displayed.Smart Pool• Tier ManagementShows Auto o

Pool Volume Selection:DescriptionItem“Any” or the drive type and rpm of the selected pool is displayed.Drive Type/RPMUnavailable.RAID LevelShows the S

DescriptionItemShows the pool-VOL capacity.CapacityShows the total number of the pool-VOLs.TotalEdit Pools wizardEdit Pools windowSetting fieldsDescri

DescriptionItemSet to execute performance monitoring and tier relocation automatically ormanually.• Cycle TimeWhen selecting Auto from the Tier Manage

DescriptionItemWarning Threshold• For Thin Provisioning and Smart Tiers:Check Warning Threshold and enter a threshold. The minimum threshold isthe poo

DescriptionItemIf multiple types of drives exist in a pool, this field indicates that the drive typesare mixed.Shows the subscription limit.Subscripti

Delete Pool wizardDelete Pool windowSelected Pools tableDescriptionItemShows the nickname and ID of the pool.Pool Name (ID)Shows the RAID level.RAID L

DescriptionItemShows the number of the pool-VOLs.Number of Pool VOLsShows the Pool Properties window when a line is selected, and shows the errorwindo

DescriptionItemInformation about pool threshold is displayed.User-Defined Threshold (%)• Warning: Warning threshold is displayed.• Depletion: Depletio

DescriptionItemInformation about pool threshold is displayed.User-Defined Threshold (%)• Warning: Warning threshold is displayed.• Depletion: Depletio

• PAIR: When initial copy is completed. The V-VOL is a virtual mirror image of the P-VOL.• PSUS: When a pair is split by the user.• PSUE: When the sys

Select Pool windowAvailable Pools tableDescriptionItemShows the nickname and ID of the pool.Pool Name (ID)Shows the RAID level.RAID LevelUsed: Shows t

Available Pool Volumes tableDescriptionItemShows the LDEV ID.LDEV IDShows the LDEV name.LDEV NameShows the pool-VOL capacity.CapacityShows the parity

NOTE: After you remove the pool-VOL that is set as the top pool-VOL, the pool-VOL that is nowdisplayed at the top of the Selected pool volumes table w

DescriptionItemShow the RAID level.RAID LevelShows the hard disk drive type and rpm.Drive Type/RPMShows the emulation type.Emulation TypeShows the LDE

Pool Properties tableDescriptionItemShows the pool name.Pool Name (ID)Shows the pool type.Pool Type• For Thin Provisioning or Smart Tiers:THP is displ

GlossaryBC P9000 or XP Business Copy. An HP application that provides volume-level, point-in-time copiesin the disk array.CLPR Cache logical partition

RAID1-level datastorageA RAID that consists of at least two drives that use mirroring (100 percent duplication of thestorage of data). There is no str

IndexAadditional shared memory, 13Auto LUN, 20BBlocked poolrecovering a, 46Business Copy, 20CCommand devicesetting up a, 27Command menu, 60configurati

see also related documentationRestoring a pair, 30Resynchronizing a pair, 30SShared memoryrequirement, 10shared memory, V-VOL management area, 15SIMs