Mylex Global Array Manager Installation Manual And User's Manual page 181

Glossary
RAID Level 5, a consistency check calculates the parity from the data
written on the disk and compares it to the written parity. A consistency check
TM
from Mylex utilities such as Global Array Manager (GAM) or RAID
TM
EzAssist give the user the ability to have a discrepancy reported and
corrected. See also Parity Check.
Critical State
A Logical Drive is in a "critical" state if it has been configured at RAID
level 1, 3, 5, or 0+1, and one (and only one) of its SCSI drives is not
"online." A logical drive is considered "critical" because any failure of
another of its SCSI drives may result in a loss of data.
Note: I/O operation can only be performed with system drives that are online
or critical.
Cyclical Redundancy Check (CRC)
An error detection tool found on Ultra 160 SCSI (Ultra3 SCSI). This tool
increases the odds for error free data.
DACCF
Disk Array Controller Configuration File (utility), a diskette-based
configuration utility for RAID configuration.
Data Transfer Rate
The amount of data per unit of time moved through a channel or I/O bus in
the course of execution of an I/O load, usually expressed in MBps.
Manual No. SA67-0049-01 Glossary-5