Zimbra HA setup and Failover

[Rama]

Hi,

We are in process of building a robust Zimba multi server where 4 servers will be configured, ldap+proxy+memcache on two servers with MMR and rest two will be configured for mailbox with DRBD where one host goes down the drbd volume & flip IP will move onto peer mailbox host.

By following this defined architecture we configured ldap+proxy+memcache on two servers with MMR and mailbox on one host with DRBD. Till this moment setup is running fine. How the second mailbox server can be configured? this hostname should be same as configured mailbox hostname ? or remains same as second?

Please suggest and guide me if primary mailbox host goes down, the second node takes control.

Thanks in advance.