Exchange server 2010 Impact when ESX is put in Maintenance Mode.
We have Exchange server 2010, 2 servers are used for Mailboxes and 2 used as Hub/CAS
SMB1 = exchange Mailbox server resides on ESX1
SMB2= exchange Mailbox server resides on ESX2
HubCas1 = Exchange Hub/CAS server resides on ESX3
HubCas2 = Exchange Hub/CAS server resides on ESX4
we have hardware issue with ESX1 and ESX3 ( we need to replace the DIMMs), so, I believe we need to put the ESX servers in maintenance mode, so that Exchange servers will vmotion to other ESX servers.
I would like to know if there are any steps to take in regards to Exchange servers before we put the ESX servers in maintenance mode and may be after ESX servers come out of maintenance mode?
Any help will be very much appreciated.