Hi folks,
Hoping someone can help on this one.
We have recently migrated from Exchange 2003 to 2010, we have 2 main sites, datacentre and DR with 1000 user approx. We have migrated around half of our users but we're experiencing some DAG instability.
When I run a Test-ReplicationHealth I get all passed except ClusterNetwork which has a status of 'Failed'. I can't find any specific problems so I'm stuck. The only potential issue may be that the iSCSI network at our DR site (fibre at the Datacentre) is set to 'Allow cluster network communication on this network' with 'Allow clients to connect through this network' option checked. I've tried to turn it off but it doesn't seem to take, it keeps reverting to allow.
IN the Failover Cluster Manager log we're getting daily cluster alerts indicating loss of quorum and and loss of connection with CLuster nodes. Our DAG is dual-site (2 x Mialox servers in each locations) and we have been experiencing some latency on our WAN recently which may also be contributing to the problems.
Any pointers welcome, thanks.