capacity
The amount of data storage space available on a physical storage device, usually measured in bytes
(MB, GB, TB, and so on).
CCI
Command Control Interface
CHAP
challenge handshake authentication protocol
CLPR
See
cache logical partition (CLPR)
.
cluster
Multiple-storage servers working together to respond to multiple read and write requests.
command device
A dedicated logical volume used only by Command Control Interface and Business Continuity
Manager to interface with the storage system. Can be shared by several hosts.
controller
The component in a storage system that manages all storage functions. It is analogous to a
computer and contains a processors, I/O devices, RAM, power supplies, cooling fans, and other sub-
components as needed to support the operation of the storage system.
copy pair
A pair of volumes in which one volume contains original data and the other volume contains the
copy of the original. Copy operations can be synchronous or asynchronous, and the volumes of the
copy pair can be located in the same storage system (local copy) or in
different
storage systems
(remote copy).
A copy pair can also be called a volume pair, or just pair. A pair created by Compatible FlashCopy
®
is
called a relationship.
copy-on-write (COW)
Point-in-time snapshot copy of any data volume within a storage system. Copy-on-write snapshots
only store changed data blocks, therefore the amount of storage capacity required for each copy is
substantially smaller than the source volume.
COW
See
copy-on-write (COW)
.
COW Snapshot
Hitachi Copy-on-Write Snapshot
custom volume (CV)
A custom-size volume whose size is
defined
by the user using Virtual LVI/Virtual LUN.
CV
See custom volume.
CVS
custom volume size
CXFS
clustered version of XFS
file
system
Glossary
System Administrator Guide for VSP Gx00 models and VSP Fx00 models
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Summary of Contents for Virtual Storage Platform F400
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