HP XP P9500 Storage - Manual (Page 21)

resource group can access only their assigned resources and cannot access other resources.
Configuring resource groups prevents the risk of data leakage or data destruction by another
storage administrator in another resource group.
The resources such as LDEVs, parity groups, external volumes, ports, or host groups, can be assigned
to a resource group. These resources can be combined to flexibly compose a virtual private storage
system group.
Resource groups should be planned and created before creating volumes. For more information,
see
“Configuring resource groups” (page 24) .
Complimentary strategies
Functions related to provisioning
For the following functions, see the appropriate manual:
•
Replication: Business Copy, Continuous Access Synchronous, Continuous Access Journal
•
External storage: External Storage
•
Migration: Auto LUN (contact HP Technical Support)
•
Partition: Cache Partition (HP P9000 Performance for Open and Mainframe Systems User
Guide)
Key terms
The following are provisioning key terms:
Description Term
Security function used to control the access to a logical volume. Access attributes are
assigned to each volume: read only, read/write, and protect. access attributes
A group of THP V-VOLs. The THP pool consists of one or more pool-VOLs. thp pool
Thin Provisioning virtual volume. THP V-VOL
Security option used to allow or not allow changing of the access attribute on a volume. expiration lock
Abbreviation for fixed-sized volume. FV
Logical Unit Size Expansion (LUSE). LUSE
A set of LDEVs defined to one or more hosts as a single logical unit (LU). A LUSE volume
can be a concatenation of two to 36 LDEVs that are then presented to a host as a single
LU. LUSE volume
In Thin Provisioning, a page is 42 MB of continuous storage in a THP V-VOL that belongs
to a THP-pool. page
A set of volumes that are reserved for storing Thin Provisioning or Snapshot write data. pool
In a thin provisioned storage system, the proportion (%) of used capacity of the pool to
the total pool capacity. Each pool has its own pool threshold values for warning and
depletion. pool threshold
A volume that is reserved for storing snapshot data for Snapshot operations or write data
for Thin Provisioning. pool-VOL, pool volume
A group that is assigned one or more resources of the storage system. The resources that
can be assigned to the resource group are LDEV IDs, parity groups, external volumes,
ports, and host group IDs. resource group
In a thin provisioned storage system, the proportion (%) of total THP-VOL capacity
associated with the pool verses the total capacity. subscription threshold
Complimentary strategies 21