HP storageworks HSG80 Reference Manual page 235

Glossary
ULP process
A function executing within a Fibre Channel node which conforms to the ULP requirements
when interacting with other ULP processes.
Ultra SCSI bus
A Fast-20 SCSI bus. See also Wide Ultra SCSI.
uninterruptible power supply
See UPS
unit
A container made accessible to a host. A unit may be created from a single disk drive. A unit
may also be created from a more complex container such as a RAIDset. See also target; target
ID number.
unwritten cached data
Sometimes called unflushed data. See also dirty data.
UPS
Uninterruptible power supply. A battery-powered power supply guaranteed to provide power
to an electrical device in the event of an unexpected interruption to the primary power supply.
Uninterruptible power supplies are usually rated by the amount of voltage supplied and the
length of time the voltage is supplied.
VHDCI
Very High-Density-Cable Interface. A 68-pin interface that is required for Ultra SCSI
connections.
virtual terminal
A software path from an operator terminal on the host to the controller CLI interface,
sometimes called a host console. The path can be established via the host port on the controller
or via the maintenance port through an intermediary host. See also maintenance terminal.
VTDPY
Virtual terminal display. A utility that allows viewing of specific informational displays using
CLI commands.
wide Ultra SCSI
Fast-20 on a Wide SCSI bus.
HSG80 Array Controller V8.7 Command Line Interface Reference Guide Glossary–27