DB2 Version 10.1 for Linux, UNIX, and Windows

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 you are changing to a disk tiebreaker, you can specify the disk in a device path format or as a PVID or WWN number. The disk you specify cannot be used for any other purpose.
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.

Procedure

To change the quorum type to a disk tiebreaker, issue this command:
```
db2cluster -cm -set -tiebreaker -disk diskname
```
To change the quorum type to a majority node set, issue this command:
```
db2cluster -cm -set -tiebreaker -majority
```