Exchange 20XX, Migration of Mailboxes
Make sure you have Space and Migrate in groups or only small bulk:
Always Monitor the Transaction Log files space on the Source and Target Disk. You COULD enable/disable "Circular Logging" but maybe in a Migration time you also want to make sure that recovery is possible. Normally you do that for a Small Business Migration where often things are not so well planned and it has to work in the morning. For 500+ Boxes Migration leave it on.
Change these values to speed up the Migration process of Mailboxes:
http://technet.microsoft.com/en-us/library/ff963524.aspx
Change this file on all you CAS Servers:
.\Program Files\Microsoft\Exchange Server\V14\Bin\MSExchangeMailboxReplication.exe.config
MaxActiveMovesPerSourceMDB - 20, 0, 100
MaxActiveMovesPerTargetMDB - 20, 0, 100
MaxActiveMovesPerSourceServer - 50, 0, 1000
MaxActiveMovesPerTargetServer - 5, 0, 1000
MaxTotalMovesPerMRS - 250, 0, 1024
Restart this Service on the CAS Server:
How to move all small Mailboxes under 5MB from in one Powershell command.
Old Database: mb1
New Database: MDB01
Exclude all Boxes which contain:
"SystemMailbox*"
"*gruppen*"
"*NIKE*"
Get-MailboxDatabase mb1 | get-mailboxstatistics | where {$_.TotalItemSize -lt 5MB -AND ($_.DisplayName -notlike "SystemMailbox*" –AND $_.DisplayName -notlike "*gruppen*" -AND $_.DisplayName -notlike "*NIKE*")} | get-mailbox | New-MoveRequest -TargetDatabase MDB01
Remove all MOVE Request:
Get-MailboxImportRequest -Status Completed | Remove-MailboxImportRequest
