The best you can do for HA without data centre JIRA is a warm backup so that if the main node fails, you can switch over to the backup node relatively quickly. Replicate the database to a read-only slave, and use shared storage for the attachments. If it goes bang, make the slave a read-write master, start the backup JIRA and re-index it.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.