Glossary - HP StorageWorks P9000 - Disk Arrays User Manual

Glossary

allocation The ratio of allocated storage capacity versus total capacity as a percentage. Allocated storage
refers to those logical devices (LDEVs) that have paths assigned to them. Allocated storage capacity
is the sum of the storage of these LDEVs. Total capacity is the sum of the capacity of all LDEVs
on the disk array.
BC HP StorageWorks P9000 or XP Business Copy. An HP StorageWorks application that provides
volume-level, point-in-time copies in the disk array.
BC z This is the version of BC that supports mainframe volumes. See BC for more information.
CLI Command-line interface. An interface comprised of various commands which are used to control
operating system responses.
CLPR cache logical partitions.
Cnt Ac-J HP StorageWorks P9000 or XP Continuous Access Journal Software.
Cnt Ac-J Z This is the version of Continuous Access Journal that supports mainframe volumes. See Cnt Ac-J
for more information.
Cnt Ac-S HP StorageWorks P9000 or XP Continuous Access Synchronous software.
Cnt Ac-S Z This is the version of Continuous Access Synchronous that supports mainframe volumes. See Cnt
Ac-S for more information.
command device A volume in the disk array that accepts HP StorageWorks Continuous Access, HP StorageWorks
Business Copy, or HP StorageWorks P9000 Business Continuity Manager control operations,
which are then executed by the array.
CT group Consistency group.
CU Control Unit. The Control Unit is used to organize the storage space attached to the DKC, you
can group similarly configured logical devices (LDEVs) with unique control unit images (CUs).
CUs are numbered sequentially. The disk array supports a certain number of CUs, depending
on the disk array model. Each CU can manage multiple LDEVs. Therefore, to uniquely identify a
particular LDEV requires both the CU number and the LDEV number.
CVS CVS devices (OPEN-x CVS or 3390-x CVS) are custom volumes configured using array
management software to be smaller or larger than normal fixed-size OPEN or mainframe system
volumes. Synonymous with volume size customization (VSC). OPEN-V is a CVS-based volume.
DFSMS Data Facility Storage Management Subsystem.
DKA Disk adapter.
DKC Disk controller.
emulation mode The LDEVs associated with each RAID group are assigned an emulation mode that makes them
operate like OPEN system disk drives. The emulation mode determines the size of an LDEV or
volume.
OPEN-V: User-defined custom size
3390-3/3R: 2.838 GB
3390-9: 8.514 GB
3390-L: 27.844 GB
3390-M: 55.689 GB
3380-3 2.377 GB
Fibre Channel A serial data transport infrastructure and protocol used to implement storage area networks
(SANs).
HDD Hard disk drive.
LDKC Logical disk controller.
LUN Logical unit number.
LUSE Logical Unit Size Expansion. The LUSE feature is available when the HP StorageWorks LUN
Manager product is installed, and allows a LUN, normally associated with only a single LDEV,
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