In addition to performing regular backups of reliable storage, you should perform backups of the Jive system home. The most simple backup solution is to simply backup the entire contents of /usr/local/jive. A more selective option is to backup only /usr/local/jive/applications and /usr/local/jive/etc. In either case, you should make backups in accordance with standard backup practices.
Before upgrading Jive SBS, you should make a full backup of /usr/local/jive.
When you're using the platform-managed database, it's a good idea to maintain copies of /usr/local/jive/var/data/backup on a separate storage volume that's immune from corruption that may occur on the /usr/local/jive volume.