HP StorageWorks HSG80 ACS Solution Software V8.8 for IBM AIX Installation and Configuration Guide (AA-RV1HA-TE, March 2005)

Glossary
251HSG80 ACS Solution Software V8.8 for IBM AIX Installation and Configuration Guide
remote copy set A bound set of two units, one located locally and one located remotely,
for long-distance mirroring. The units can be a single disk, or a
storageset, mirrorset, or RAIDset. A unit on the local controller is
designated as the “initiator” and a corresponding unit on the remote
controller is designated as the “target”.
request rate The rate at which requests are arriving at a servicing entity.
RFI Radio frequency interference. The disturbance of a signal by an
unwanted radio signal or frequency.
replacement
policy
The policy specified by a switch with the SET FAILEDSET command
indicating whether a failed disk from a mirrorset or RAIDset is to be
automatically replaced with a disk from the spareset. The two switch
choices are AUTOSPARE and NOAUTOSPARE.
SBB HP StorageWorks building block. (1) A modular carrier plus the
interface required to mount the carrier into a standard HP
StorageWorks shelf. (2) any device conforming to shelf mechanical
and electrical standards installed in a 3.5-inch or 5.25-inch carrier,
whether it is a storage device or power supply.
SCSI Small computer system interface. (1) An ANSI interface standard
defining the physical and electrical parameters of a parallel I/O bus
used to connect initiators to devices. (2) a processor-independent
standard protocol for system-level interfacing between a computer and
intelligent devices including hard drives, floppy disks, CD-ROMs,
printers, scanners, and others.
SCSI-A cable A 50-conductor (25 twisted-pair) cable generally used for
single-ended, SCSI-bus connections.
SCSI bus signal
converter
Sometimes referred to as an adapter. (1) A device used to interface
between the subsystem and a peripheral device unable to be mounted
directly into the SBB shelf of the subsystem. (2) a device used to
connect a differential SCSI bus to a single-ended SCSI bus. (3) A
device used to extend the length of a differential or single-ended SCSI
bus. See also DOC (DWZZA-On-a-chip) and I/O module.
SCSI device (1) A host computer adapter, a peripheral controller, or an intelligent
peripheral that can be attached to the SCSI bus. (2) Any physical unit
that can communicate on a SCSI bus.
SCSI device ID
number
A bit-significant representation of the SCSI address referring to one of
the signal lines, numbered 0 through 7 for an 8-bit bus, or 0 through 15
for a 16-bit bus. See also target ID number.