Dell PowerVault MD3260 Administrator's Guide - Page 18

Self-Monitoring Analysis And Reporting Technology, Virtual Disks And Disk Groups, Virtual Disk States - drive replacement

Page 18 highlights

Status Optimal Failed Replaced Pending Failure Offline Identify Mode Hot Spare in use Assigned, Unassigned, Hot Spare in use, or Hot Spare Standby Assigned Assigned, Unassigned, Hot Spare in use, or Hot Spare Standby Not applicable Assigned, Unassigned, Hot Spare in use, or Hot Spare Standby Description The physical disk in the indicated slot is in use as a hot spare within a disk group. The physical disk in the indicated slot has failed because of an unrecoverable error, an incorrect drive type or drive size, or by its operational state being set to failed. The physical disk in the indicated slot has been replaced and is ready to be, or is actively being, configured into a disk group. A Self-Monitoring Analysis and Reporting Technology (SMART) error has been detected on the physical disk in the indicated slot. The physical disk has either been spun down or had a rebuild aborted by user request. The physical disk is being identified. Self-Monitoring Analysis And Reporting Technology 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. Disk groups are always created in the unconfigured capacity of a storage array. Unconfigured capacity is the available physical disk space not already assigned in the storage array. Virtual disks are created within the free capacity of a disk group. Free capacity is the space in a disk group that has not been assigned to a virtual disk. Virtual Disk States The following table describes the various states of the virtual disk, recognized by the storage array. 18

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Status
Mode
Description
Optimal
Hot Spare in use
The physical disk in the indicated slot is in use as a hot
spare within a disk group.
Failed
Assigned, Unassigned, Hot Spare
in use, or Hot Spare Standby
The physical disk in the indicated slot has failed because
of an unrecoverable error, an incorrect drive type or
drive size, or by its operational state being set to failed.
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.
Pending Failure
Assigned, Unassigned, Hot Spare
in use, or Hot Spare Standby
A Self-Monitoring Analysis and Reporting Technology
(SMART) error has been detected on the physical disk in
the indicated slot.
Offline
Not applicable
The physical disk has either been spun down or had a
rebuild aborted by user request.
Identify
Assigned, Unassigned, Hot Spare
in use, or Hot Spare Standby
The physical disk is being identified.
Self-Monitoring Analysis And Reporting Technology
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.
Disk groups are always created in the unconfigured capacity of a storage array. Unconfigured capacity is the available
physical disk space not already assigned in the storage array.
Virtual disks are created within the free capacity of a disk group. Free capacity is the space in a disk group that has not
been assigned to a virtual disk.
Virtual Disk States
The following table describes the various states of the virtual disk, recognized by the storage array.
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