HP XP P9500 Storage - Manual (Page 138)

Glossary
This glossary defines the special terms used in this document. Click the letter links below
to navigate.
alternate path A secondary path to a logical volume, in addition to the primary path, that is used as a backup
in case the primary path fails.
array Another name for a RAID storage system.
array controller The computer inside a RAID storage system that hosts the Remote Web Console software and is
used by service personnel for configuration and maintenance of the storage system.
array group See RAID group.
async asynchronous
at-time split Operation that allows multiple pairsplit operations to be performed at a pre-determined time.
audit log Files that store a history of the operations performed from Remote Web Console and the service
processor (SVP), commands that the storage system received from hosts, and data encryption
operations.
base emulation
type Emulation type that is set when drives are installed. Determines the device emulation types that
can be set in the RAID group.
BC business continuity
BLK, blk block
ca cache
cache logical
partition (CLPR) Virtual cache memory that is set up to be allocated to different hosts in contention for cache
memory.
CAJ Continuous Access Journal
capacity The amount of data storage space available on a physical storage device, usually measured in
bytes (MB, GB, TB, etc.).
cascade
configuration In a ShadowImage cascade configuration, two layers of secondary volumes can be defined for
a single primary volume (open-systems only). Pairs created in the first and second layer are called
cascaded pairs. Compatible FlashCopy does not support a cascade configuration.
CFL Configuration File Loader. A Remote Web Console function for validating and running scripted
spreadsheets.
CFW cache fast write
CG See consistency group (CTG).
CH channel
channel adapter
(CHA) The hardware component that processes channel commands from hosts and manages host access
to cache.
channel path The communication path between a channel and a control unit. A channel path consists of the
physical channel path and the logical path.
CHAP challenge handshake authentication protocol
CL cluster
CLI command line interface
CLPR cache logical partition
cluster Multiple-storage servers working together to respond to multiple read and write requests.
command device A dedicated logical volume used only by RAID Manager and Business Continuity Manager to
interface with the storage system. Can be shared by multiple hosts.
consistency group
(CG, CTG) A group of pairs on which copy operations are performed simultaneously; the pairs’ status changes
at the same time. See also extended consistency group (EXCTG).
consistency time
(C/T) Shows a time stamp to indicate how close the target volume is to the source volume. C/T also
shows the time stamp of a journal and extended consistency group.
138 Glossary