[KLUG Members] Postgres Cluster

[Andrew Eidson]

Hey all.. I was looking at the Postgres documentation and their definition
of a Database Cluster is different from what I am use to with MS SQL. The
definition in the manual basically states a cluster is multiple databases
run by a single instance of Postgres. A cluster in the terms of my thinking
is a setup of multiple SQL installs/machines that replicate from a Main
point incase one machine/install fails the next machine takes over until the
primary machine can be repaired and then replicate the data from the backup
machine before it becomes live again.. can postgres do this and if so can
someone point me to documentation on it. 

Thanks

Andrew Eidson