Reseed a Failed Mailbox Database Copy in Exchange Server 2010

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To reseed the database copy launch the Exchange Management Shell on the server that is in a failed state.
  • Suspend replication for the mailbox database copy on this server. by running following command
    [PS] Suspend-MailboxDatabaseCopy -Identity “MB Database 09Staff01”

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

  • Reseed the database with a new copy by issuing the following command.

         [PS]Update-MailboxDatabaseCopy -Identity “MB Database 09Staff01” -DeleteExistingFiles

When the update has completed it will automatically resume replication for the database copy. The duration of the seeding depend on the size of database.

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