Dell PowerVault ME5 Series Storage System CLI Reference Guide

PDF

set disk-group


Description	Changes parameters for a specified disk group.
Minimum role	standard
Syntax	set disk-group [name <new-name>] [owner a\|b] [scrub-duration-goal `hours`] [spare-capacity <size>[B\|KB\|MB\|GB\|TB\|KiB\|MiB\|GiB\|TiB]\|default] [spin-down-delay delay] <disk-group>
Parameters	name <new-name> Optional. A new name for the disk group. A name that includes a space must be enclosed in double quotes. The name can include printable UTF-8 characters except: " , < \ 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. scrub-duration-goal `hours` Optional. The requested duration of a disk-group scrub operation, in hours. A value of 0 indicates that the scrub duration will use the system default duration setting of 720 hours (30 days). A value of 1 to 1080 hours (45 days) will cause the storage system to adjust the resources available to the scrub operation, which could affect other performance. There is no guarantee that this scrub duration goal is achievable, due to such considerations as disk-group size or abnormally high host activity. 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. NOTE: If spare capacity is made larger than the default, ADAPT will be degraded. If the spare capacity is made smaller, the user won't be able to revert it back to Default (target and actual capacity are the sum of the largest two disks in the ADAPT disk group) until more disks are added to the ADAPT. `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. 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. NOTE:Drive spin down is not applicable to disks in virtual pools. <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. # set disk-group name dg2 dg1 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
See also	expand disk-group show disk-groups