HP P9000 Tiered Storage Manager Software 7.4.1-00 CLI Reference Guide (TB585-96029, April 2013)

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.
parity group
selection rule
This is the rule specified when you want to select a migration target after
considering the usage status of parity groups. This rule has the following three
options:
- BalanceCapacity: Selects migration target volumes so that the parity groups
that are selected as the migration destination have the same amount of remaining
capacity.
- MaximumCoverage: Selects migration target volumes from as many parity
groups as possible.
- MinimumCoverage: Selects migration target volumes from as few parity groups
as possible.
pool A storage area for virtual volumes.
pool volume Real volumes that makes up a pool.
property file A file in which the settings, such as the settings for server operations or the default
option settings for CLI execution, are specified. The Tiered Storage Manager
server property files are the following six files:
- server.properties file
- client.properties file
- database.properties file
- devicemanager.properties file
- logger.properties file
- hppa.properties file
The CLI property files are the following two files:
- htsmcli.properties file
- htsmclienv.properties file
real volume A storage system volume that has an actual capacity. In this manual, a real
volume is a volume other than a virtual volume.
serial number The device identification number assigned to a storage system.
Smart Tiers Provides two functions: the HP StorageWorks P9000 Thin Provisioning function
and a function that relocates data according to I/O load. Smart Tiers allocates
regions of data that have high I/O loads to faster hardware tiers and regions
of data that have low I/O loads to slower hardware tiers.
SMI-S Enabled
storage system
A storage system that is managed by an SMI-S (Storage Management Initiative
- Specification) provider.
storage tier A grouping of volumes that are candidates as migration targets. In the CLI,
migration is performed by specifying a migration group as the source and a
storage tier as the target. The volumes and THP pools included in the storage
tier can be specified in terms of, for example, the intended purpose of use,
performance, and reliability.
THP pool An area used for registering a THP pool volume (actual volume). When a THP
volume (virtual volume) is updated by a host, THP pool stores the data in the THP
pool volume.
THP pool volume A real volume used for a THP volume.
Glossary196