HP NetStorage 6000 User Manual page 188

Glossary
U
Uninterruptible Power Source (UPS)
A source of electrical power that is not affected by outages in the external power
source.
User Authentication
See Authentication.
User Identification (UID)
A unique number in the UNIX environment that identifies an individual to a computer
system.
User Level Security
The HP NetStorage 6000 uses a domain controller to authenticate users when they
access the device. Access Control Lists (ACL) define a user's access rights to a partic-
ular object.
V
Virtual volume
A volume containing checkpoints for a real volume. This allows you to view the check-
points currently existing on the HP NetStorage 6000.
Glossary-10