Changing the cluster manager quorum type
The Db2 cluster services tiebreaker is set up initially in the installation GUI when the first instance is created. Change the cluster manager quorum type only if a problem occurs with the specified disk or the configuration changes.
Before you begin
- The Db2 pureScale® instance must be stopped on all hosts before the quorum type can be changed. The cluster manager must remain online.
- If a shared disk is chosen to be used as the disk tiebreaker for CM quorum device, the disk can be specified using device path format, PVID or WWN number. Note that the disk specified cannot be used for any other purpose in the cluster. Ensure that the disk is not associated with any NSD (Spectrum Scale) or local filesystems.
- The disk option for the cluster manager can be entered in the form of a device path (for example: /dev/hdisk0), or as a PVID (port virtual local area network identifier) or WWN (world wide name) number.
- To perform this task, you must be the Db2 cluster services administrator.
- This task requires MPIO configuration. Make sure to check the disk attributes.