CLI Guide

ManualsBrandsDell ManualsCompellent (SCEMC PowerVault ME4012

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[owner a|b]

[spin-down-delay delay]

disk-group

Parameters

[adapt-spare-capacity size [B|KB|MB|GB|TB|KiB|MiB|GiB|TiB]|default]

Optional. For an ADAPT disk group, this specifies the target spare capacity.

• size [B|KB|MB|GB|TB|KiB|MiB|GiB|TiB]: Sets the target spare capacity to a specific size. The unit is

optional (B represents bytes). If no unit is specified, GiB will be used, regardless of the current base.

Whichever unit is set, internally the value will be rounded down to the nearest GiB. If the value is set to 0,

the absolute minimum spare space will be used. If this parameter is omitted, the default setting will be

used.

• default: Sets the target spare capacity to the sum of the two largest disks in the disk group, which is

sufficient to fully recover fault tolerance after loss of any two disks in the group.

name new-name

Optional. A new name for the disk group. A name that includes a space must be enclosed in double quotes.

owner a|b

Optional for a linear disk group. Prohibited for a virtual disk group. Sets the new owner: controller A or B.

CAUTION: Before changing the owning controller for a linear disk group, you must stop host

I/O to its volumes. Volume mappings are not affected.

NOTE: Changing ownership of a disk group while any volumes in the disk group are mapped to

live hosts is not supported and may cause data loss or unavailability. All volumes in the disk

group must be unmapped or attached hosts must be shut down before the ownership of a disk

group is changed.

spin-down-delay delay

Optional for a linear disk group. Prohibited for a virtual disk group. Not applicable for ADAPT. For spinning

disks in a linear disk group, this sets the period of inactivity after which the disks and dedicated spares will

automatically spin down. Setting the delay to 1–360 minutes will enable spin down; setting the delay to 0 will

disable spin down.

NOTE:

Drive spin down affects disk operations as follows:

• Spun-down disks are not polled for SMART events.

• Operations requiring access to disks may be delayed while the disks are spinning back up.

disk-group

Name or serial number of the disk group to change. A name that includes a space must be enclosed in double

quotes.

Examples

Rename virtual disk group dgA01 to vdg.

# set disk-group name vdg dgA01

Rename linear disk group dg1 to dg2 and set its spin-down delay to 10 minutes.

# set disk-group name dg2 spin-down-delay 10 dg1