Wednesday, December 19, 2012

Mount Mailbox Database in Exchange 2010

My test mailbox servers lost all iSCSI connections abruptly. Upon restore, the mailbox database (DAG) was not mounted

According to this Technet for Exchange 2010, I should execute this cmdlet to get the MailDB01 mounted: 
Mount-Database -Identity Mailbox01\MailDB01 

But it didn't work. Instead, I had this error:
Cannot process argument transformation on parameter 'Identity'. Cannot convert value "mailbox01\maildb01" to type "Microsoft.Exchange.Configuration.Tasks.DatabaseIdParameter". Error: "'mailbox01\maildb01' is not a valid value for the identity.

Parameter name: Identity"

+ CategoryInfo : InvalidData: (:) [Mount-Database], ParameterBindin...mationException

+ FullyQualifiedErrorId : ParameterArgumentTransformationError,Mount-Database  

It must be another straight 'copy-and-paste' from Exchange 2007 documentation. Instead, the correct cmdlet for Exchange 2010 should be:
Get-MailboxDatabase -Identity MailDB01 | Mount-Database -force 

The "-force" option may be needed to ignore other previous errors. Once the database is mounted, I have to reseed the second failed copy. For further information, see "How to Reseed a Failed Mailbox Database Copy in Exchange Server 2010".


  1. Good tips on the link provided. Just few steps, it is easy.

  2. An error message in the middle of a project is the worst. Luckily there is usually a quick fix if you know what you're doing.

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