Hp XP20000XP24000 Disk Array Manuel d'utilisateur

HP StorageWorks XP24000 Thin Provisioning Software User's Guide Part number: T5227–96001 First edition: June 2007

10 About this Guide

1 Overview of HP StorageWorks XP Thin Provisioning Software XP Thin Provisioning is a program product that enables you to reduce the installation cost

Figure 1 Effects of XP Thin Provisioning Because you need to create volumes with the same capacity when you define volumes, you can incur initial insta

Table 2 XP Thin Provisioning Advantages Advantages With XP Thin Provisioning Without XP Thin Provisioning Reduced installation cost You can define vo

Overview of HP StorageWorks XP Thin Provisioning Software 14

2 About XP Thin Provisioning Operations In XP Thin Provisioning, the storage system stores and manages data on a volume in a pool by using V-VOLs. Thi

Figure 2 Relationship Between Pools and V-VOLs XP Thin Provisioning Software You can perform XP Thin Provisioning operations on an HP StorageWorks XP

Creating the V-VOL Management Area Before you can use XP Thin Provisioning, you must have a V-VOL management area, which is used to associate a V-VOL

One method you will use to monitor pool capacity is setting thresholds. Once a threshold is exceeded, a SIM (Service Information Message) is issued, a

Table 4 Program Products that can be Used in Conjunction with XP Thin Provisioning Program Products Explanation Business Copy • You can use a V-VOL

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Backup differential data Restore differential data P-VOL S-VOL （V-VOL）（V-VOL） Figure 3 Using XP Thin Provisioning and Business Copy When you use both

• The maximum possible total number of XP Snapshot pools and XP Thin Provisioning pools is 32. • XP Thin Provisioning pool-VOLs cannot be used as XP

Figure 4 Example of the Changes in the Pool Usage Rates Performance Management You can implement performance management of V-VOLs as follows. • Colle

Figure 5 Managing Usage Rates and I/Os By copying high-workload V-VOL data to low-workload pools using Business Copy, you can balance the workload of

• Pool threshold1: You can set the pool threshold between 5% and 95% in 5% increments. The default value is 70%. • Pool threshold2: This value is a

Pool Status The nexttableshows the poolstatusesthat you can display using RemoteWeb Console. However, you cannot display the V-VOL status because the

26 About XP Thin Provisioning Operations

3Preparing forXPThin Provisioning Operations This chapter describes the requirements and restrictions for using XP Thin Provisioning and instructions

Table 10 Pool-VOL Requirements Item Requirement Volume type Logical volume (LDEV) Note: Separating normal volumes and pool-VOLs into different parity

Table 11 Pool Requirements Item Requirement Pool capacity 8 GB to 286 TB per pool The capacity of the pool is calculated by the following formulas: Th

Contents AboutthisGuide ... 7 IntendedAudience... 7 RelatedDocumentation...

Table 12 V-VOL Requirements Item Requirement Volume type V-VOL. TheLDEVnumberisthe same as fornormalvolumes. Emulation type OPEN-V Servers (including

Shared Memory Requirements XP Thin Provisioning requires its own dedicated shared memory for the V-VOL management area, which is separate from the sha

the pool capacity, which is as much as 42% of the V VOL capacity, will be used when you create the file system. Notes on Reducing the Pool Capacity You

4UsingtheXPThinProvisioning GUI To use XP Thin Provisioning, click Volume Manager on Remote Web Console’s starting menu. Among the displayed windows,

•total This indicatesthe totalcapacity(GB)ofall thepools in useand thepools that canbecreated. The capacity of the pools that can be created is derive

• PG: parity group to which the pool-VOL belongs • Int. VOL Info: hard disk drive type of the volume When you specify an internal volume whose hard

• Threshold 2: threshold for pool usage rate (%) Default setting is 80%, and it cannot be changed. • Attribute: program product that uses the pool

Figure 7 V-VOL Window Note: Whenyou create V-VOLs in the V-VOL window, you create a V-VOL group and create the V-VOLs in the group. When you delete V-

Table 15 V-VOL Window Pop-up Menu Commands Command Menu Function When you right-click the XP Thin Provisioning icon New V-VOL Group Opens the New V-

The following figure shows an example of the XP Thin Provisioning window when you select the LDKC:CU radio button. Figure 8 XP Thin Provisioning Window

InstallingandUninstallingXPThinProvisioning... 32 InstallingXPThinProvisioning... 32 UninstallingXP

Figure 9 XPThinProvisioningWindow(when youselectthe Pool radio button) • CU or Pool: selection options Select the key information for displaying TP-

• Emulation: emulation type of the TP-VOL • Capacity: capacity (GB) of the TP-VOL • Parity Group: number of the parity group in which the volume

42 Using the XP Thin Provisioning GUI

5PerformingXPThinProvisioning Operations This chapter describes the operations and the windows for XP Thin Provisioning. Using XP Thin Provisioning Th

Note: Only the storage administrator can perform 1. Preparing for operations, 2. Operating (Adding pool-VOLs), and 3. Discontinuing operations. Man

14. Click Apply. Aconfirmation message is displayed asking if it is OK to apply the setting to the storage system. Caution: You cannot delete pool-VOL

Apop-upmenuisdisplayed. Note: If the pool usage rate is 95% or higher, the pop-up menu will not be displayed. 3. Select Change Pool Information from

Deleting Multiple Pools To delete multiple pools: Caution: If you execute the following operation, all the pools that can be deleted will be deleted.

4. Click OK. The icons for the pools change to indicate normal pools. 5. Click Apply. Aconfirmation message is displayed asking if it is OK to apply

12. Enter the number of V-VOLs you want to create in the Number of V-VOL text box. Note: You can enter only a whole number from 1 to 1,024 in this te

1..2..3..4..5..6..7..8..9..10..11..12..13..14..15..16..17..18..Figures EffectsofXPThinProvisioning ... 12 RelationshipBetweenP

• V-VOL Group drop-down list You can select or enter the V-VOL group ID in the drop-down list. A whole number from 1 to 65,535 can be selected or en

TheV-VOL group IDthatyou setinthe New V-VOL Group dialog box is displayed. • Emulation Type drop-down list You can select the emulation type of the V

Figure 15 Create V-VOL Wizard Dialog Box (2) The Create V-VOL wizard dialog box (2) displays the following items: • V-VOL information setting list (u

Gray cells indicate LDEV numbers that are already used for other volumes, white cells indicate unused LDEV numbers, and blue cells indicate LDEV numbe

• LDKC:CU:LDEV: LDKC number, CU number, and LDEV number of the V-VOL • Back button Returns to the Create V-VOL wizard dialog box (2) while maintaini

Figure 17 Connect Pool Dialog Box The Connect Pool dialog box displays the following items: • Pool ID Displays the pool ID. • Status Displays the st

Figure 18 Change Threshold Dialog Box The Change Threshold dialog box displays the following items: • Threshold drop-down list You can select the val

If the mode is already changed to Modify, you can skip this step. For information on how to change the mode, see the HP StorageWorks XP24000 Remote W

58 Performing XP Thin Provisioning Operations

6 Troubleshooting This chapter describes troubleshooting problems when using XP Thin Provisioning and where to call. XP Thin Provisioning Troubleshoot

1..2..3..4..5..6..7..8..9..10..11..12 ..13..14..15..16..17..18..Tables DocumentConventions... 8 XPThinProvisioningAdvantage

Problems Causes and Solutions Cannot add pool-VOLs. Causes: • 1,024 pool-VOLs are already set in the pool. • Therequirements for thepool-VOLs are n

Managing Pool-Related SIMs In pools or V-VOLs, the following SIMs (Service Information Message) will sometimes occur. • When the usage rate for the p

62 Troubleshooting

A Acronyms and Abbreviations Table 18 Acronyms and Abbreviations CCI RAID Manager CLPR cache logical partition CU controlunit (logicalcontrol unit) C

VLL Virtual LVI/LUN VMA volume management area V-VOL virtual volume 64 Acronyms and Abbreviations

Index A Acronyms and Abbreviations,63 Advantages of XP Thin Provisioning,12 Associating V-VOLs with a Pool,17 audience, 7 B Business Copy,19 C Change

Requirements and Restrictions,27 S Setting the Pool Association Information to the V-VOL,54 shared memory,17 Shared Memory Requirements,31 SIMs,24, 61

About this Guide This document provides instructions for installing and using the Remote Web Console web client Java applet program for the HP storage

Document Conventions Table 1 Document Conventions Convention Element Blue text: Table 1 Cross-reference links and e-mail addresses Blue, underlined t

Subscription Service HP recommends that you register your product at the Subscriber’s Choice for Business website: http://www.hp.com/go/e-updates Afte