Itīs not officially supported i guess. Iīve read some threads where other people were doing it.
About heartbeat, we have it already setup for other service like proxy and network connections. So, the basics are already there . The steps i have in mind are:
1. Backup Zimbra installation. I think a simple copy of /opt/zimbra to somewhere else would do the job. Right?
2. Repartition the disk using gparted
3. Mount /opt to this new partition
4. Setup DRDB
4. Restore Zimbra
5. Cross my fingers
6. Start everything up (fingers still crossed)
Once more, any tips or gotchas?