TC
TrueCopy
TID
target ID
total capacity
The aggregate amount of storage space in a data storage system.
U
update copy
An operation that copies differential data on the primary volume of a copy pair to the
secondary volume. Update copy operations are performed in response to write I/Os on
the primary volume after the initial copy operation is completed.
UR
Hitachi Universal Replicator
USP
Hitachi TagmaStore® Universal Storage Platform
USP/NSC
Hitachi TagmaStore® Universal Storage Platform and Hitachi TagmaStore® Network
Storage Controller
USP V/VM
Hitachi Universal Storage Platform V/VM
USP VM
Hitachi Universal Storage Platform VM
V
virtual device (VDEV)
A group of logical devices (LDEVs) in a RAID group. A VDEV typically consists of some
fixed volumes (FVs) and some free space. The number of fixed volumes is determined
by the RAID level and device emulation type.
LUN volume
A custom-size volume whose size is defined by the user using Virtual LVI/Virtual LUN.
Also called a custom volume (CV).
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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-21
Hitachi TrueCopy® User Guide for Hitachi Virtual Storage Platform Gx00 and Fx00 Models
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