Self-Monitoring Analysis And Reporting Technology (Smart); Virtual Disks And Disk Groups - Dell PowerVault MD3000 Hardware Owner's Manual

Table 3-1. RAID Controller Physical Disk States
Mode Status
Unassigned or Optimal
Standby
Assigned Optimal
Assigned, Failed
Unassigned, In Use,
or Standby
Hot Spare In Use or Optimal
Replaced
(none) (none)
Hot Spare Standby Optimal
Unassigned Failed
Assigned Offline

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.

Virtual Disks and Disk Groups

When configuring a storage array, you would normally proceed in this order:
• Organize the physical disks into disk groups.
• Create virtual disks within these disk groups.
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Using Your RAID Enclosure
Description
RAID controller module can access a physical disk,
but the physical disk is not configured as part of a
virtual disk or disk group.
RAID controller module can access a physical disk
and the physical disk is configured as part of a
virtual disk or disk group.
A physical disk was either part of a virtual disk, a
hot spare, or was unconfigured. RAID controller
module can no longer access the physical disk
because it has detected an unrecoverable error on
the physical disk.
RAID controller module is writing to a physical
disk to restore full redundancy to a virtual disk.
RAID controller module can no longer detect a
physical disk that is part of a virtual disk because
the physical disk has been physically removed from
its slot.
RAID controller module has configured a physical
disk as a hot spare.
The physical disk is unsupported.
The physical disk is not available for any
operations. The physical disk can transition to an
offline state only if its disk group is marked offline.