Hp StorageWorks XP Remote Web Console Software Instrukcja Użytkownika Pobierz pdf (Strona 26)

Table 14 Requirements of the S-VOL of XP Snapshot

Item

Requirement

Volume type

V-VOL

You cannot specify the following volumes as XP Snapshot S-VOLs.

• Volumesused asS-VOLs ofXPSnapshot pairs

• Volumesusedbyapair or migrationplanof another programproduct

Note:

ALUSES-VOL must be paired with aP-VOL of thesamesizeand thesame

structure.

Emulation type

OPEN-V

Maximum number

16 ,3 84

For details about the maximum number of XP Snapshot pairs that can be created,

see “Calculating Maximum Number of Pairs”onpage 27.

Path deﬁnition

Required

Table 15 Requirements of the Pool-VOL of XP Snapshot

Item

Requirement

Volume type

Logical volume (LDEV)

Note

: Separating normal volumes and pool-VOLs into different parity groups is

recommended for the best performance.

You cannot specify the following volumes as XP Snapshot pool-VOLs.

• Volumes whose LDEV attribute is other than normal

• LUSE volumes

• Volumesusedas P-VOLsorS-VOLsofXPSnapshotpairs

• Volumes already registered in pools of XP Snapshot or XP Thin Provisioning

• Volumesusedbyapair or migrationplanof another programproduct

• Volumesthatare setwiththe ProtectorReadOnlyattribute, or the S-VOL

Disable setting by Data Retention Utility

• Volumes that have Cache Residency Manager settings

Emulation type

OPEN-V

RAID level

All RAID levels are supported. You may register pool-VOLs whose RAID levels

are different in the same pool; however, HP recommends that you specify the

same RAID level for pool-VOLs registered in the same pool so that performance

is not decreased.

Drive type

All drive types are supported. You may register pool-VOLs whose drive types

are different in the same pool; however, HP recommends that you specify the

same drive type for pool-VOLs registered in the same pool so that performance

is not decreased.

Maximum number

8,192

However, the maximum number of pool-VOLs that can be registered in each pool

is 256. That is, you can create up to 32 pools in one storage system.

In addition, the volume already registered as a pool-VOL in a pool cannot

be registered in another pool. Also note that if you create pools for XP Thin

Provisioning, the number of available pools for XP Snapshot will decrease

according to the number of XP Thin Provisioning pools.

Volume capacity

8GBto2TB.

Note

: Dividing a parity group into 16 volumes is recommended for the best

performance.

Path deﬁnition

Not required.

The volumes with path deﬁnition cannot be speciﬁed as a pool-VOL

Preparing for XP Snapshot Operations

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