HP storageworks HSG80 Reference Manual page 210

Glossary
array controller software
See ACS
association set
A group of remote copy sets that share selectable attributes for logging and failover. Members
of an association set transition to the same state simultaneously. For example, if one
association set member assumes the failsafe locked condition, then other members of the
association set also assume the failsafe locked condition. An association set can also be used to
share a log between a group of remote copy set members that require efficient use of the log
space. See also remote copy set.
asynchronous
Pertaining to events that are scheduled as the result of a signal asking for the event; pertaining
to that which is without any specified time relation. See also synchronous.
autospare
A controller feature that automatically replaces a failed disk drive. Autospare aids the
controller in automatically replacing failed disk drives. You can enable the AUTOSPARE
switch for the failedset causing physically replaced disk drives to be automatically placed into
the spareset. Also called autonewspare.
backplane
The electronic printed circuit board into which you plug subsystem devices—for example, a
controller or power supply.
bad block
A data block containing a physical defect.
bad block replacement
See BBR
battery hysteresis
The ability of the software to allow write-back caching during the time a battery is charging,
but only when a previous down time has not drained more than 50 percent of rated battery
capacity.
BBR
Bad Block Replacement. A replacement routine that substitutes defect-free disk blocks for
those found to have defects. This process takes place in the controller, transparent to the host.
Glossary–2 HSG80 Array Controller V8.7 Command Line Interface Reference Guide