HP StorageWorks P9000 Tiered Storage Manager Software 7.1.1 CLI Reference Guide (TB585-96014, September 2011)

Glossary
This glossary defines the special terms used in this document.letter.
host group A group of hosts with WWN HBAs that are allowed to issue I/Os to specified
volumes. You can specify multiple volumes. Host groups are managed by LUN
Manager for the storage.
host storage
domain
A host group. In this manual, host storage domain means the same thing as host
group.
HP StorageWorks
P9000 Thin
Provisioning
A function that allocates a larger virtual volume than the actual capacity to a
host and uses the required actual capacity for data write requests.
LDEV (Logical
Device)
A logical volume unit made up by combining multiple physical drives.
LDEV selection
rules
Rules applied when you select a migration target. You can set rules for each
migration group.
The LDEV selection rules are as follows:
- Parity group avoidance rule
- Parity group selection rule
logical DKC A name for managing a volume when volumes are managed by 64k-LDEV unit
in HP P9500 or XP24000/XP20000. In HP P9500 or XP24000/XP20000, only
migration source and target volumes in the same logical DKC can be migrated.
For this reason, storage domains are made in logical DKC units.
logical DKC
number
The number assigned to identify a logical DKC.
logical DKC serial
number
The device identification number logically assigned to a logical DKC. This number
is displayed as logical-DKC-number + serial-number.
LU (logical unit) A logical unit in a storage system.
LUSE (LU size
expansion)
A function that combines LUs to enlarge volume capacity.
normal volume In Tiered Storage Manager software, a normal volume is a volume that is not a
virtual or pool volume.
parity group A group of physical drives in a RAID configuration in a storage system.
parity group
avoidance rule
This rule does not select, as a migration target parity group, a parity group that
contains an LDEV that belongs to a specific migration group.
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