HP StorageWorks XP12000, Руководство по подготовке площадки

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Glossary 83
Glossary
ACP Array control processor. The ACP handles the passing of data between the
cache and the physical drives held in the DKUs. ACPs work in pairs,
providing a total of eight SCSI buses. Each SCSI bus associated with one
ACP is paired with a SCSI bus on the other ACP pair element. In the event
of an ACP failure, the redundant ACP takes control. Both ACPs work
together sharing the load.
AL Arbitrated loop.
AL-PA Arbitrated loop physical address.
allocation The ratio of allocated storage capacity versus total capacity as a percentage.
“Allocated storage” refers to those LDEVs that have paths assigned to
them. The allocated storage capacity is the sum of the storage of these
LDEVs. Total capacity refers to the sum of the capacity of all LDEVs on
the disk array.
array group The number of physical disk drives contained in a RAID group. This
number depends on the RAID configuration. For example, there can be two
or four physical disks in a RAID1 group. There are four physical disks in a
RAID5 group.
BC The HP StorageWorks Business Copy XP software program, which enables
you to maintain up to nine internal copies of logical volumes on the disk
array.
BS Basic supply.
BTU British thermal unit.
°
C Degrees centigrade/Celsius.