Toshiba Magnia 560S - Manual (Page 36)

RAID Overview 18
Introduction to RAID
Logical Drive States
Table 2.4 describes the possible states for logical drives.
Table 2.4 Logical Drive States
State Description
Optimal The drive operating condition is good. All configured drives
are online.
Degraded The drive operating condition is not optimal. One of the
configured drives has failed or is offline.
Failed The drive has failed.
Offline The drive is not available to RAID Controller Kit-G.
SCSI Drive States
Table 2.5 describes the states that a SCSI hard drive can be in.
Table 2.5 SCSI Drive States
State Description
Online
(ONLIN) The drive is functioning normally and is a part of a configured
logical drive.
Ready
(READY) The drive is functioning normally but is not part of a
configured logical drive and is not designated as a hot spare.
Hot Spare
(HOTSP) The drive is powered up and ready for use as a spare in case
an online drive fails.
Fail
(FAIL) A fault has occurred in the drive placing it out of service.
Rebuild
(REB) The drive is being rebuilt with data from a failed drive.