User`s guide

striped mirrorsets
Stripesets whose members have been mirrored.
tagged command queuing
A technique that allows a device to have multiple I/O requests outstanding to it
at one time.
target
Is a SCSI device that performs an operation requested by an initiator. Target
is determined by the device’s address on its SCSI bus. For example, the HSJ
controller can address targets 0 through 6 in a single configuration or targets 0
through 5 in a dual-redundant configuration.
TILX
Tape Inline Exerciser. Diagnostic firmware used to text the data transfer
capabilities of tape drives in a way that simulates a high level of user activity.
TMSCP
Tape Mass Storage Control Protocol. The protocol by which blocks of information
are transferred between the host and the controller.
unit
The host’s view of a container on an HS array controller. A unit may be made up
of simply a physical disk or tape drive, or a more complex container such as a
RAIDset.
unwritten cached data
Data in the write-back cache which has not yet been written to the physical
device, but the user has been notified that the data has been written.
value-added firmware
The firmware that provides logical block mapping, cache, RAID, and so on.
VCS
VAXcluster system console. This terminal allows access to the maintenance
port on the controller from the host that connects to other hosts (by networks).
Another method of accessing the controller. See also DUP.
virtual terminal
A software path from an operator terminal on the host to the controller’s CLI.
The path can be established via the host port on the controller (using DUP) or via
the maintenance port through on intermediary host (VCS). A virtual terminal is
also sometimes called a host console.
warm swap
A method used to add or swap devices while the system remains on line during
device removal, replacement, or addition. All activity on the bus where the device
is being swapped must be halted for the duration of the removal, replacement, or
addition.
Glossary–8