HP XP7 Tiered Storage Manager CLI Reference Guide (TK985-96002, May 2014)

Glossary
This glossary defines the special terms used in this document.
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.
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 XP7, HP P9500, or XP24000/XP20000.
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 (logical unit
size expansion)
A function that combines LUs to enlarge volume capacity.
migration The action of reallocating data that is stored in the storage system. Data can be
migrated from the current storage location to another location without affecting
the application. In the CLI, migration is performed by specifying a migration
group as the source and a storage tier as the target.
migration group A grouping of volumes that are to be migrated at the same time. In the CLI,
migration is performed by specifying a migration group as the source and a
storage tier as the target. Also, locking tasks, unlocking tasks, and shredding
tasks are created for each migration group.
normal volume In Tiered Storage Manager, 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.
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