Hp StorageWorks 1510i Modular Smart Array Uživatelský manuál stáhnout pdf (Strana 71)

migrate unit

Description Migrates an ex

isting LUN from one RAID level to another. If you attempt to

move to an unsu

pported RAID conﬁguration for a LUN, an error message

is displayed.

NOTE:

Before changing the RAID level or stripe size of a LUN, verify there is

available, unused space on the array. Migrating from one RAID level

to another may require additional space for parity and organizational

purposes.

Syntax migrate unit <unit> raid_level=<raid level>

[stripe_size=<size>]

Operands <unit>

The number (0-31) of the LUN to modify.

raid_level=<raid level>

The RAID fault-tolerance level to use. RAID levels include:

• 0 = RAID 0 (no fault tolerance)

• 1 = RAID 1 (mirroring)

• 5 = RAID 5 (distributed parity)

• 6 = RAID 6 (Advanced Data Guarding)

NOTE:

If more than one pair of drives are included in a RAID 1 array, the

data is striped across the ﬁrsthalfofthedrivesinthearrayandthen

each drive is mirrored to a drive in the remaining half of the drives for

fault tolerance. This method is referred to as RAID 1+0.

stripe_size=<size>

[Optional]Thestripesizetoassign(inKB).Optionsinclude:

• RAID0usesstripesizes8,16,32,64,128,and256(Default:128KB)

• RAID1usesstripesizes8,16,32,64,128,and256(Default:128KB)

• RAID 5 uses stripe sizes 8, 16, 32, and 64 (Default: 16 KB)

• RAIDADGusesstripesizes8,16,32,and64(Default:16KB)

Example

Tomigrateunit0toRAID5withastripesizeof32KB:

CLI> migrate unit 0 raid_level=5 stripe_size=32

The RAID level of Unit 0 will now be 5.

Unit 0 is being migrated.

Use “show unit 0” to monitor progress.

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Hp StorageWorks 1510i Modular Smart Array Uživatelský manuál Strana 71