Reseed a Failed Mailbox Database Copy in Exchange Server 2010

When a mailbox database copy has failed in an Exchange Server 2010 Database Availability Group (DAG) it may be necessary to reseed the mailbox server with the failed database copy.

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To Reseed the database we need to suspend the replication first using command:

[PS] C:>Suspend-MailboxDatabaseCopy -Identity "Mailbox Database 01EX2"

The mailbox database copy status will now change from “Failed” to “Failed and Suspended”.

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Now, we can use the command to reseed the database:

[PS] C:>Update-MailboxDatabaseCopy -Identity "Mailbox Database 01EX2" -DeleteExistingFiles

When the update has completed it will automatically resume replication for the database copy

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