Jira has a built-in xml export, which, by default, will be run daily (or twice daily), and drop it into a local directory. You could copy or move those over to another file system (or even mount another file system into place so it's writing there automatically).
For a full backup, you also need a copy of the attachments directory, so you would need to cron a copy (many of us do a regular rsync over to another storage, in a very short script)
However, Atlassian (and those of us who have worked with medium or large Jira systems) recommend backups of the database. You should use your database native or preferred backup solution to take a restorable copy/export/dump of the database on a regular basis. (And think about the attachments as per xml export route - the xml is another form of database export)
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.