Over the weekend we had a situation where we lost all power to our datacenter. We have Exchange 2013 (virtual) with a 2 node DAG hosting 24 database averaging about 200GB each. When we brought Exchange back online the primary server/databases were fine. A logical drive was corrupted and four of the passive database copies appeared corrupt. They were disconnected and not updating. I ran a chkdsk to repair the logical drive where the 4 databases reside. I looked at the DAG and I see that passive node appears to be down. It's communicating with the DAG. Since the other database all appeared to be fine I went ahead and Suspended and Reseeded the 4 databases the were disconnected. Now they all seem to be replicating fine but the DAG still shows that the passive server as not communicating. If I run a Get-DatabaseAvailabilityGroup -status I get an error
"Warning: An unexpected error has occurred and a Watson dump is being generated: Object reference not set to an instance of an object"
From the heartbeat nic I can ping the server so it appears to be communicating fine.
Is there anyway to repair the DAG or o I have to evict the troubled node add it back and reseed?
Any assistance appreciated.