I'm maintaining a Zimbra OpenSource installation at our school and was recently talking to a colleague who is a sysadmin at a different school in the same city. He is planning to also use Zimbra there. Both our schools are connected to the same MAN by a 1 Gbps connection.
We were wondering if it is possible to connect our zimbra installations in a way that one zimbra server takes over if the other one goes down.
What would be necessary to realize such a solution?
Thanks for any hints,