HP XP12000 Bedienungshandbuch PDF herunterladen (Seite 48)

channel processor

(CHP)

The processors located on the channel adapter (CHA). Synonymous with CHIP.

command device A volume on the disk array that accepts Continuous Access or Business Copy

control operations which are then executed by the disk array.

control unit To organize the storage space attached to the DKC, you can group similarly

configured logical devices (LDEVs) with unique control unit images (CUs). CUs

are numbered sequentially. The disk array supports a certain number of CUs,

depending on the disk array model. Each CU can manage multiple LDEVs.

Therefore, to uniquely identify a particular LDEV requires both the CU number

and the LDEV number.

CU Control unit.

CVS Custom volume size. CVS devices (OPEN-x CVS) are custom volumes configured

using array management software to be smaller than normal fixed-size OPEN

system volumes. Synonymous with volume size customization (VSC).

disk adapter (DKA) Synonymous with the term ACP.

disk controller

(DKC)

The array hardware that houses the channel adapters and service processor

(SVP).

disk group The physical disk locations associated with a parity group.

disk recovery and

restore unit (DRR)

The unit responsible for data recovery and restoration in the event of a cache

failure.

disk type The manufacturing label burned into the physical disk controller firmware. In

most cases, the disk type is identical to the disk model number.

disk unit (DKU) The array hardware that houses the disk array physical disks.

emulation modes The logical devices (LDEVs) associated with each RAID group are assigned an

emulation mode that makes them operate like OPEN system disk drives. The

emulation mode determines the size of an LDEV.

OPEN-3: 2.46 GB

OPEN-8: 7.38 GB

OPEN-9: 7.42 GB

OPEN-E: 13.56 GB

OPEN-K: Not available on this array

OPEN-L: 36 GB

OPEN-M Not available on this array

OPEN-V: User-defined custom size

EPO Emergency power off.

ESCON Enterprise System Connection (the IBM trademark for optical channels).

expanded LUN A LUN is normally associated with only a single LDEV. The LUSE feature allows

a LUN to be associated with 1 to 36 LDEVs. Essentially, LUSE makes it possible

for applications to access a single large pool of storage. The LUSE feature is

available when the HP StorageWorks LUN Configuration Manager product is

installed.

ExSA Extended serial adapter.

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