Intergraph InterRAID-8e Hardware User's Manual page 164

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replacement disk
A disk drive available to replace a failed member disk drive in a RAID array.
replacement table
Information regarding hard disk drives replaced through standby replacement.
replacement unit
A component or collection of components in a disk subsystem that are always
replaced as a unit when any part of the collection fails. Typical replacement units
in a disk subsystem includes disks, controller logic boards, power supplies, and
cables. Also called a hotspare.
rotated XOR redundancy
Also known as parity, which refers to a method of providing complete data
redundancy while requiring only a fraction of the storage capacity normally
associated with redundancy.
SAF-TE
An industry standard acronym for SCSI Accessed Fault-Tolerant Enclosure.
secondary RAID controller
The RAID controller in the system base unit that connect to additional disk arrays.
session
The period of time between any two consecutive system shutdowns.
single-bus
A SCSI cable configuration of one bus with a single-bus module installed to link all
drives in the cabinet to a single channel.
Single Inline Memory Module (SIMM)
A printed circuit card containing integrated circuits.
Small Computer System Interface (SCSI)
A bus interface that was designed for connecting peripheral devices, primarily high-
speed data storage devices such as CD-ROM drives and hard disk drives.
Small Computer System Interface (SCSI) drive
A disk drive equipped with a small computer system interface (SCSI). Each disk
drive will be assigned a SCSI address (or SCSI ID), which is a number from 0 to
15. The SCSI address uniquely identifies the drive on the SCSI channel.
smart cabinet
The predecessor to SAF-TE, a method of monitoring the cabinet environment using
a SCSI ID.