I am trying to configure HA MailBox server with the help of external Load balancer and due to the budget constraint we are evaluating the simpler ways to configure the scenario rather than investing on SAN at this moment.
We are evaluatiing NFS storage space where two MBOX server would share common /opt/zimbra/message and /opt/zimbra/index. Or thinking to go with DRBD. Please let me know if NFS can work well in this scenario? Can we share the same data store with two servers and create the high availability?
Just would like to know the forum's opinion on the same. Also, how can we build High Available Zimbra environment in Geographically dispersed locations and/or with Two ISPs?