Dell PowerVault MD3000i - Manual (Page 29)

Using Your RAID Enclosure
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If a disk drive rebuild fails because of a source drive failure or because the
drive is too small, the user interface 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)
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 RAID controller monitors all attached
drives and notifies users when a predicted failure is reported by a physical
disk.
Failed Assigned,
Unassigned, Hot
Spare In Use, or
Hot Spare Standby The physical disk in the indicated
slot has been failed because of an
unrecoverable error, an incorrect
drive type or drive size, or by its
operational state being set to
failed. Amber flashing
(125 ms)
Replaced Assigned The physical disk in the indicated
slot has been replaced and is ready
to be, or is actively being,
configured into a disk group. Green flashing
(On 400 ms, Off
100 ms)
Pending
Failure Assigned,
Unassigned, Hot
Spare In Use, or
Hot Spare Standby A SMART error has been detected
on the physical disk in the
indicated slot. Flashing Green,
Amber, and off
(none) (none) The indicated slot is empty, or the
array cannot detect the physical
disk. Off
Table 2-1. RAID Controller Physical Disk States (continued)
Status Mode Description Physical Disk
Status LED
Indication