Hp XP20000XP24000 Disk Array Manuel d'utilisateur télécharger pdf (Page 32)

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 Reduci

ng the Pool Capacity

You cannot delete pool-VOLs that have previously been registered in a pool. To decrease pool capacity,

you need to create another pool or delete the pool-VOLs themselves, and recreate a pool.

NotesonSwitching Offthe PowerSupply

Before you switch off the power supply while XP Thin Provisioning is running, stop the host I/O operations

ﬁrst. When you switch off the power supply, the management table on the shared memory for XP Thin

Provisioning is backed up to the hard disk drive in the SVP. When you switch on the power supply, the

management table in the hard disk drive is recovered to the shared memory, so you can use the storage

system in the same status as when you switched off the power supply.

Installing and Uninstalling XP Thin Provisioning

General ins

tallation instructions are contained in the HP StorageWorks XP24000 Remote Web Console

User's Gui

de. This section contains an outline of the additional instructions that are speciﬁctoXPThin

Provisioning.

Installing XP Thin Provisioning

The installation procedure for XP Thin Provisioning is described below.

1. Your HP service representative will install the additional shared memory for the V-VOL

management area. This is separate from the shared memory for XP Snapshot.

2. Make sure that you have sufﬁcient license capacity for the actual V-VOL management area. For

speciﬁc instructions on installing license capacity, see the HP StorageWorks XP24000 Remote

Web Console User's Guide.

3. Add parity groups, and add the volumes that will be used as pool-VOLs. You can use volumes in

existing unused parity groups, in which case you would delete the path deﬁnition and perform

an LDEV format. For more detailed information about the LDEV format, see the HP StorageWorks

XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User's Guide.

4. Create the pools. For speciﬁc instructions, see “Creating Pools” on page 44.

Create the V-VOLs. For speciﬁc instructions, see “Creating V-VOLs” on page 48.

6. Associate the V-VOLs to the pools. For speciﬁc instructions, see

“Changing the V-VOL Information”onpage54.

7. Deﬁne the path deﬁnition for the V-VOLs. For speciﬁc instructions, see the HP StorageWorks

XP24000 LUN Manager User's Guide.

Uninstalling XP Thin Provisioning

The uninstallation procedure for XP Thin Provisioning is described below.

1. Delete the path deﬁnition for the V-VOLs. For speciﬁc instructions, see the HP StorageWorks

24000 LUN Manager User's Guide.

2. Pe

rform an LDEV format on the V-VOLs. For more detailed information about the LDEV format,

see the HP StorageWorks XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User's Guide.

3. Release the association between the V-VOLs and the pools. For speciﬁc instructions, see

“Deleting a Pool” on page 46.

Delete all V-VOLs. For speciﬁc instructions, see “Deleting a V-VOL Group” on page 56.

Delete all pools. For speciﬁc instructions, see “Deleting Pools”onpage46.

6. Uninstall the XP Thin Provisioning license. For speciﬁc instructions on uninstalling the license

capacity, see the HP StorageWorks XP24000 Remote Web Console User's Guide.

Preparing for XP Thin Provisioning Operations

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