Dell MD3220 Self-Monitoring Analysis and Reporting Technology, Virtual Disks and Disk Groups

Table 4-1.	RAID Controller Physical Disk States (continued)
Status	Mode	Description	Physical Disk
			Status LED
Pending	Assigned,	A Self-Monitoring Analysis and	Green flashing
Failure	Unassigned,	Reporting Technology (SMART) error	(500 ms), Amber
	Hot Spare in	is detected on the physical disk in the	(500 ms), and Off
	use, or Hot	indicated slot.	(1000ms)
	Spare standby
Offline	Not applicable	The physical disk has either been spun	Green flashing
		down or had a rebuild aborted by user	(3000 ms), Amber
		request.	(3000 ms), and
			Off (3000ms)
Identify	Assigned,	The physical disk is being identified.	Green flashing
	Unassigned,		(250 ms)
	Hot Spare in
	use, or Hot
	Spare standby
N/A	N/A	The indicated slot is empty, or the
		array cannot detect the physical disk.

If a disk drive rebuild fails because of a source drive failure or because the drive is too small, the MDSM reports a failure of the physical disk even though the LED state on the drive indicates the rebuild was aborted (green for 3 seconds, amber for 3 seconds, then off for 3 seconds).

Self-Monitoring Analysis and Reporting Technology

SMART monitors the internal performance of all physical disk components to detect faults indicating the potential for physical disk failure. SMART uses this information to report whether failure is imminent so that a physical disk can be replaced before failure occurs. The storage array monitors all attached drives and notifies you when a predicted failure is reported by a physical disk.

Virtual Disks and Disk Groups

When configuring a storage array, you must:

1Organize the physical disks into disk groups.

2Create virtual disks within these disk groups.

Planning: MD3200 Series Storage Array Terms and Concepts

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