I used DRBD to build a replicated PostgreSQL setup a couple of years ago: http://people.reed.edu/~lennon/scaling.html http://people.reed.edu/~lennon/scaling.htm

I used DRBD to build a replicated PostgreSQL setup a couple of years ago: http://people.reed.edu/~lennon/scaling.html http://people.reed.edu/~lennon/scaling.html It worked pretty well, but the write speed was probably about 1/4 to 1/5 that of a local database. We've sense moved to log-shipping as a replication model. We do still use DRBD for some replicated NFS shares, and it's proven to be pretty trouble-free. (Knock on wood.)