Outlook clients loose connectivity after database failover in DAG exchange 2010
Posted on 2013-12-04
I am currently running exchange 2010 latest SP and updates.
I have 2 CAS/HUB servers in an WNLB configured with a casarray : array01.domain.com
I have 2 other servers with CAS/HUB/MBX roles installed.
there is only one site the default-first-site. and all exchange servers are in the same site datacenter and subnet.
I currently have 5 databases each with approx. 50 users. The RPCCLient access server
on all databases is set to the FQDN of the Casarray.
the cas array has only the 2 cas/hub servers not the mbx with the cas/hub roles aswell for obvious reasons, cant be done in a dAG.
the issue I have is when I failover the databases to the secondary server in the DAG, none of the outlook clients can connect or it is extremely slow.
could it be possible that even though the CASarray is configured they are not connecting to one of the servers in the array ? would the cas roles on the MBX servers interfere ?
also the DAG network runs over the same as the MAPI.