Glossary - HP StorageWorks P9000 - Disk Arrays Reference Manual

Glossary

AL-PA Arbitrated loop physical address.
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.
bit The basic unit of data in a binary numbering system (binary digit), represented by a 0 or a 1.
Eight bits equals one byte.
CHA Channel adapter. A device that provides the interface between the array and the external host
system. Occasionally, this term is used synonymously with the term channel host interface processor
(CHIP).
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.
C-Track Continuous Track. An HP StorageWorks software program that detects internal hardware
component problems on a array and automatically reports them to HP Support Services.
DKA Disk adapter.
DKC Disk controller.
DKU Disk Unit.
ESW Express Switch Adapter.
FC-AL Fibre Channel arbitrated loop.
fence level A method of setting rejection of P9000 or XP Continuous Access write I/O requests from the host
according to the condition of mirroring consistency.
Fibre Channel A serial data transport infrastructure and protocol used to implement storage area networks
(SANs).
FICON Fibre connectivity. A FC layer 4 protocol used to map mainframe channel command and data
I/O operations onto standard FC infrastructure, protocol and FC services.
HBA Host bus adapter.
HDD Hard disk drive.
LDKC Logical disk controller.
LUN Logical unit number.
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