Hp XP20000XP24000 Disk Array Manuale Utente Pagina 1

HP StorageWorks XP24000 Auto LUN Software User's Guide Part number: T5215–96001 First edition: June 2007

Figure 1 Performance Management Process Flow Diagram Overview of HP StorageWorks XP Auto LUN Software 10

2 About Auto LUN Operations Components To use Auto LUN, you need: • the storage system • the Auto LUN program product (Performance Monitor is r

group or volume usage varies only slightly, or for cases in which overall DKP or DRR usage is relatively high. • From an open-system host, users can

To find fast hard disk drives, display the Auto LUN window and check classes (Figure 4 on page 13). Classes indicate disk access speed for parity group

Notes: When you use Auto LUN for the first time, you must reserve volumes for migration destinations in advance. These reserved volumes are marked wit

The Auto LUN operation consists of two steps: • Copy thedataonthe Auto LUNsourcevolumetothe Auto LUN target volume(see Figure 7 on page 15). • Transf

Old Target Volume Old Source Volume Hosts cannot access device. Hosts can access device. LDEV ID = 0x123 LDEV ID = 0x321 Reserved Figure 8 Data Flow

TrueCopy for Mainframe: If the status of a TrueCopy for Mainframe volume is suspended or simplex, the volume can be used as a source volume. If not,

• TrueCopy for Mainframe operation that changes the volume status to something other than suspended or simplex. • Continuous Access operation that c

can be executed concurrently changes depending on the number of differential tables that Auto LUN can use, and depending on the emulation types and si

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• ShadowImage for Mainframe • Compatible FlashCopy Table 4 The capacity of migrated volume and the estimated delay in the copying speed Capacity of

of differential tables and pair tables needed for migrating a mainframe volume, see “Calculating Differential Tables Required for Mainframe Volume Mig

The following table shows the number of the control cylinders according to the emulation types. Table 5 The Number of the Control Cylinders According

Table6TheTotalNumberoftheDifferentialTablesPerMigrationPlan Emulation Type Expression OPEN-3 Total number of the differential tables per migration pla

Table 7 The Number of the Control Cylinders According to the Emulation Types Emulation Type Number of the Control Cylinders OPEN-3 8 (5,760KB) OPEN-8

3PreparingforAutoLUN Operations System Requirements To use Auto LUN, you need: • Storage system • Auto LUN software (Performance Monitor is req

26 Preparing for Auto LUN Operations

4UsingtheAutoLUNGUI Using the Auto LUN Windows Auto LUN can be used to balance workloads among hard disk drives and thus remove bottlenecks from the s

Figure 13 The Manual Plan Window of the Auto LUN The Manual Plan window displays the following: • Monitoring Term: Displays the monitoring period spe

• indicates a RAID-6 parity group. The HDD class for this parity group is C. • indicates a RAID-6 parity group. The HDD class for this parity group i

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

indicatesthe status of thevolume. Thenumberonthe left of the first colon (:) from the left is the LDKC number. The number on the left of the second co

Indicates the volume ID. The number on the left of the first colon (:) from the left is the LDKC number. The number on the left of the second colon (:)

• An estimated usage rate for the parity group after a proposed volume migration. If you specify an external volume as a source volume, Auto LUN cann

• RAID indicates the RAID type. • PG indicates the parity group ID or the external volume group ID. The number before the hyphen (-) is the frame nu

Figure 18 The Attribute Window of the Auto LUN The Attribute window displays the following information: • Monitoring Term displays the monitoring per

right of an icon, the icon represents the parity group 1-3. If the text 1-3[1-4] appears on the right of an icon, the icon represents two parity group

indicates a normal volume that can be migrated. If you change the attribute of this volume to a reserved volume ( ), this volume can be used as a mig

When you select an external volume group in the tree, the list displays information about external volumes (that is volumes in the external volume gro

Figure23TheHistoryWindowoftheAutoLUN Note:Auto Migration History will be supported in a future release. The History window displays the following info

•The Source[Parity Gr.] and Target[Parity Gr.] columns also display the information about external volume group migration, though these groups are n

CallingHPTechnicalSupport ... 49 AAcronymsandAbbreviations ... 51 Index ...

40 Using the Auto LUN GUI

5AutoLUN Operations Starting Auto LUN To start Auto LUN, take the following steps: 1. Ensure that the Remote Web Console main window is in Modify

5. Select the Apply button. The settings in the window are applied to the storage system. The specified volume is reserved as a migration destination.

A new migration plan, consisting of the specified source and target volumes, is added to the list. The new migration plan is displayed in blue. Note: T

Table 9 Messages in the Migration Logs (displayed in the Action column) Message Meaning Migration Started The migration operation started. Migration C

6 Using RAID Manager for Manual Volume Migration In the environment where Auto LUN is installed on the storage system, users can use RAID Manager to p

SMPL Pairsplit -S Pairsplit -S PSUS Pairsplit -S Paircreate PSUE COPY Migration succeeded Migration Failed Figure 25 Status Transition Chart of a

Error Code Cause Measure 2301 Auto LUN is not installed on the storage system. Install Auto LUN, and the perform the volume migration. 2306 The LBA si

Error Code Cause Measure 234B The migration target volume is already specified as thesourcevolumeofAuto LUN. Release the volume from Auto LUN, and then

7 Troubleshooting This chapter gives troubleshooting information on Auto LUN. For troubleshooting information on Remote Web Console, see the following

...Figures 1 PerformanceManagementProcessFlowDiagram... 10 2 AnExampleofMigrationPlansDisplayedinth

50 Troubleshooting

A Acronyms and Abbreviations Table 11 Acronyms and Abbreviations ACP array control processor CU controlunit (logicalcontrol unit) DASD direct-access s

52 Acronyms and Abbreviations

Index A audience, 7 Auto LUN system requirements,25 C class,13 conventions document, 7 storage capacity values, 7 D document conventions, 7 related do

...Tables 1 DocumentConventions ... 7 2 Non-Cascade Volumes and Auto LUN Source Volumes .. ... ... ... ...

About this Guide This user's guide describes and provides instructions for using the Auto LUN software. The term storage system in this guide ref

• 1 TB (terabyte) = 1,0004 bytes HP XP storage systems use the following values to calculate logical storage capacity values (logical devices): • 1K

1 Overview of HP StorageWorks XP Auto LUN Software Auto LUN lets you balance workload among hard disk drives, volumes (LUs) and processors to remove b