Setting a quorum disk using the CLI

You can set a managed disk (MDisk) as a quorum disk by using the command-line interface (CLI).

To set the MDisk to a specified quorum index or to set the MDisk as the active quorum disk, use the setquorum command.

When possible, distribute the quorum candidate disks so that each MDisk is provided by a different storage system. For a list of storage systems that support quorum disks, refer to the Supported Hardware List located at the SAN Volume Controller (2145) Web site:
Support for SAN Volume Controller (2145)
Web site
Ensure that the status of the MDisk that is being set as a quorum disk is online before setting it as the quorum disk. To check the status of the MDisk that is being set as the quorum disk, use the svcinfo lsquorum command.
Wait at least 20 seconds between issuing a consecutive setquorum command. This delay allows time for the first update to the quorum disk to complete before setting another quorum disk.

Note: Quorum functionality is not supported for solid-state drive (SSD) MDisks.

To set an MDisk as a quorum disk, follow these steps:

Issue the following CLI command to set the MDisk that is currently assigned the quorum index number to a nonquorum disk. The cluster automatically assigns quorum indexes.
```
svctask setquorum -quorum quorum_index mdisk_id | mdisk_name
```
where quorum_index specifies the particular set of managed disks that you want to continue as a quorum disk to the cluster and mdisk_id | mdisk_name is the ID or the name of the MDisk to assign as a quorum candidate disk.
Issue the following command to make the specified MDisk the active quorum disk. To identify the quorum disk that is active, use the svcinfo lsquorum command.
```
svctask setquorum -quorum quorum_index -active mdisk_id | mdisk_name
```
where quorum_index specifies the quorum index with a value of 0, 1, or 2, and mdisk_id | mdisk_name is the ID or the name of the MDisk to assign as a quorum candidate disk. The active parameter makes the MDisk that was specified in the previous example the active quorum disk.