bmp
bitmap
C
C/T
See consistency time (C/T).
ca
cache
cache logical partition (CLPR)
Consists of virtual cache memory that is set up to be allocated to different hosts in
contention for cache memory.
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 3DC cascade configuration for remote replication, data is copied from a local site to
an intermediate site and then to a remote site using TrueCopy and Universal Replicator.
See also 3DC.
In a ShadowImage cascade configuration, two layers of secondary volumes can be
defined for a single primary volume. Pairs created in the first and second layer are
called cascaded pairs.
cascade function
A ShadowImage function for open systems that allows a primary volume (P-VOL) to
have up to nine secondary volumes (S-VOLs) in a layered configuration. The first
cascade layer (L1) is the original ShadowImage pair with one P-VOL and up to three S-
VOLs. The second cascade layer (L2) contains ShadowImage pairs in which the L1 S-
VOLs are functioning as the P-VOLs of layer-2 ShadowImage pairs that can have up to
two S-VOLs for each P-VOL.
See also root volume, node volume, leaf volume, level-1 pair, and level-2 pair.
cascaded pair
A ShadowImage pair in a cascade configuration. See cascade configuration.
shared volume
A volume that is being used by more than one replication function. For example, a
volume that is the primary volume of a TrueCopy pair and the primary volume of a
ShadowImage pair is a shared volume.
CCI
Command Control Interface
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Glossary-3
Hitachi TrueCopy® User Guide for Hitachi Virtual Storage Platform Gx00 and Fx00 Models
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