Self-Monitoring Analysis And Reporting Technology; Virtual Disks And Disk Groups - Dell PowerVault MD3220 Owner's Manual

Table 4-1. RAID Controller Physical Disk States
Status Mode
Pending Assigned,
Failure Unassigned,
Hot Spare in
use, or Hot
Spare standby
Offline Not applicable The physical disk has either been spun
Identify Assigned,
Unassigned,
Hot Spare in
use, or Hot
Spare standby
N/A N/A
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:
1 Organize the physical disks into disk groups.
2 Create virtual disks within these disk groups.
Planning: MD3200 Series Storage Array Terms and Concepts
Description
A Self-Monitoring Analysis and
Reporting Technology (SMART) error
has been detected on the physical disk
in the indicated slot.
down or had a rebuild aborted by user
request.
The physical disk is being identified.
The indicated slot is empty, or the
array cannot detect the physical disk.
(continued)
Physical Disk
Status LED
Flashing Green
(500 ms), Amber
(500 ms), and off
(1000ms)
Flashing Green
(3000 ms), Amber
(3000 ms), and
off(3000ms)
Green flashing
(250 ms)
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