I would recommend repmgr[1] over solutions like DRBD suggested. The simple reason is that DRBD replicates on block level and doesn't understand postgres data st

I would recommend repmgr[1] over solutions like DRBD suggested. The simple reason is that DRBD replicates on block level and doesn't understand postgres data structures, while repmgr relies on mechanisms provided by Postgres. So if there is a failure, you're far less likely to learn that all your data is gone, because some important block on disk was not replicated and the database is not readable. With repmgr the worst what could happen is that you might lost few latest transactions, but your data should always be consistent and in working state. [1] http://repmgr.org/ http://repmgr.org/