Exchange 2010: How to Delete the First Database and Move the System Mailboxes

Before removing the Last Database from the system Confirm the location
(a) Transaction log file

(b) Catalogue file

The First database contains the SystemMailboxes which are the Arbitration mailbox(es).

We have to move these system mailboxes to another database before of remove the Default Database.

1. Find the Arbitration Mailbox using the Exchange Management Shell (EMS):

Get-Mailbox -Arbitration | Where {$_.Name -like "SystemMailbox*" } | ft –wrap

2. Now create a new move request in order to move the system mailboxes to another mailbox database:

New-MoveRequest -Identity "SystemMailbox{1f05a927-32d1-4e19-8ea5-67eba859f541-yourGUID}" -TargetDatabase "dbxxxx"

3. Verify whether the move request completed:

Get-MoveRequest

4. Now remove the move request

Remove-MoveRequest -Identity "the name of the request like Microsoft Exchange Approval Assistant"