Hitachi Virtual Storage Platform - Page 141

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Glossary–7
Hitachi VSP User and Reference Guide
Tier 4 systems are not supported.
V
virtual storage director
The virtual storage directors of the Virtual Storage Platform storage
system control the front-end directors and manage front-end access to
cache memory.
volume
A logical device (LDEV), or a set of concatenated LDEVs in the case of
LUSE, that has been defined to one or more hosts as a single data
storage unit. A mainframe volume is called a logical volume image (LVI),
and an open-systems volume is called a logical unit. (LU).