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Exchange 2010 DAG Passive DB stuck in "Failed and Suspended" Copy Status

Posted on 2013-01-08
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Last Modified: 2013-01-14
We have a 3 server configuration for Exchange 2010 - 2 Servers with Mailbox & Hub Transport roles and 1 Server running CAS role.  The 2 Mailbox servers, XCHMBS01 & XCHMBS02, are in a DAG and the Heartbeat witness is on the CAS.
A month or so back and unknown to us, we had an Exchange 2010 DAG database fail or ??? and the Active copy on XCHMBS02 became Active on XCHMBS01 and "Failed and Suspended" on XCHMBS02 yet the Copy Queue Length continues to grow.  I ran the "Update-MailboxDatabaseCopy" cmdlet and it comes back with error...

A source-side operation failed. Error An error occurred while performing the seed operation. Error: An error occurred while processing a request on server 'XCHMBS01'. Error: Couldn't open backup file handle for database 'Over2MDB' to server 'XCHMBS01'. Hresult: 0x50d. Error: A database backup is already in progress. Please verify that no other seeding or incremental reseeding operations are started for this database, and then try the operation again by rerunning the Update-MailboxDatabaseCopy cmdlet.. [Database: Over2MDB, Server: xchmbs02.dai.local]
    + CategoryInfo          : InvalidOperation: (:) [Update-MailboxDatabaseCopy], SeedInProgressException
    + FullyQualifiedErrorId : 4B7CB0C8,Microsoft.Exchange.Management.SystemConfigurationTasks.UpdateDatabaseCopy

I've done a lot of research, run multiple cmdlets, suggested scripts without any luck. All indications confirm the the Active DB is on the XCHMBD01 server yet I am unable to Resume or Update the copy and too leary to attempt Removing it.

Any suggestions ?
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Question by:DunawayAssoc
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Expert Comment

by:Manpreet SIngh Khatra
ID: 38758682
How Many DB's in total do we have ?
Is this the only DB affected ?
What is teh SP on both DAG servers respectively ?

- Rancy
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Accepted Solution

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DunawayAssoc earned 0 total points
ID: 38758989
Update!

Issue has been resolved, following is summary of what we did.

In Failover Cluster Manager under Cluster Core Resources, there was an additional "IP Address" listed under the DAG that had, in place of an IP address, a status of Unable to Connect (or something like that).  I deleted the listing without any problems after double checking the correctly listed Address for the DAG was in fact correct.

Disabled Replication on the Production (or MAPI) Network in EMC under Organization Configuration > Mailbox > Database Availability Groups tab > Properties for the correct Network. This will prevent using the Production Network for Replication as long as the Heartbeat Network is up and running. It will, however, still failover to the Production Network if the Heartbeat Network where to go offline.

Restarted the MS Replication Service.

Replayed changed to the failed database. It took about 1.5 hrs and I was able to follow progress using cmdlet Get-MailboxDatabaseCopyStatus.

All is well.
ExchangeDAG-Overview.pptx
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Author Closing Comment

by:DunawayAssoc
ID: 38773842
It worked.  The key was finding the incorrect entry in Failover Cluster Manager and I had read so many posts elsewhere and picked up on a few configuration tips like restarting the service, that replication does not need to move across the Production network and to do a Replay as a starting point instead of starting with an Update.  There is a lot of info out there on this error and just as many different scenarios so I was leary of forging ahead because there was no perfect match to my particular issue.  I really hope someday this one saves someone else a lot of time, I spent about 2 days on this and the solution took about 2 hrs once I was headed in the right direction.
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