Physical Device States (ServeRAID)

^{IBM-AUSTRIA - PC-HW-Support 30 Aug 1999}

Physical Device States (ServeRAID)

Physical Device States Bay/Array Selection List

The status of the drives in the Bay/Array selection list is defined as follows:

Status	Meaning

CDR	CD-ROM drive installed.

DDD	A drive in the Online (ONL) or Rebuild (RBL) state
	has become defunct, it does not respond to commands.

DHS	A hot spare or standby hot spare drive enters the
	Defunct Hot-spare (DHS) state if it fails to respond
	to adapter commands.

EMP	No device is present in the bay. This state is represented
	on the screen with blanks or dashes (- - -).

HSP	A hot spare drive is a hard disk drive that is defined
	for automatic use when a similar drive fails.
	The drive capacity of the replacement HSP drive must
	be equal to or greater than the capacity of the drive
	being replaced. You must have at least four hard disk
	drives if you want a hot spare RAID level 5.

ONL	The drive is online and part of an array.

RBL	The drive is being rebuilt. A physical hard drive can
	enter the RBL state if:
	° A good working drive replaces a defunct (DDD)
	drive that is part of the critical logical drive.
	At the end of a successful rebuild, the state of the
	physical drive becomes online (ONL), and the state
	of the corresponding logical drives changes to OKY.
	° An online drive is part of a logical drive defunct
	(DDD) and an HSP or SHS drive with the same or greater
	capacity is available. The state of the hot-spare drive
	becomes RBL during the rebuild. When the rebuild
	completes successfully, the state changes to ONL,
	the former hot-spare drive is now part of the
	logical drive.
	° A ready (RDY) or Standby (SBY) drive replaces a
	defunct (DDD) drive that is part of the critical
	logical drives. The state of the RDY or SBY drive
	becomes RBL during the rebuild. At the end of a
	successful rebuild, the state of the drive becomes
	online (ONL), the drive is now part of the logical
	drive.
	For more information on rebuilding a drive see
	'Rebuilding a Logical Drive'

RDY	The ready drive is recognized by the adapter and is
	available for definition. A RDY drive becomes EMP when
	the drive is physically removed from the bay.

SBY	A standby drive is a hard disk drive that has been
	spun down. Devices such as tape drives and CD-ROM drives
	are considered to be in a Standby state.

SHS	A standby hot-spare is a hot spare drive that has been
	spun down. If a drive becomes defunct and no suitable
	Hot-Spare drive is available, a Standby Hot-Spare of
	appropriate size spins up, and enters the Rebuild process.
	You must have at least four hard disk drives if you want
	a standby hot spare and RAID level 5.

TAP	A tape drive is installed.