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 ?