Dell PowerVault MD3200i User Manual download pdf (Page 39)

Planning: MD3200i Series Storage Array Terms and Concepts 39

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:

Organize the physical disks into disk groups.

Create virtual disks within these disk groups.

Provide host server access.

Create mappings to associate the virtual disks with the host servers.

NOTE: Host server access must be created before mapping virtual disks.

Offline Not applicable The physical disk has either been spun

down or had a rebuild aborted by user

request.

Green flashing

(3000 ms), Amber

(3000 ms), and

Off (3000 ms)

Identify Assigned,

Unassigned,

Hot Spare in

use, or Hot

Spare standby

The physical disk is being identified. Green flashing

(250 ms)

N/A N/A The indicated slot is empty, or the

array cannot detect the physical disk.

Table 4-1. RAID Controller Physical Disk States

(continued)

Status Mode Description Physical Disk

Status LED

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Dell PowerVault MD3200i User Manual Page 39