What is the best practice when I do not know whether the mailbox or user account is going to be migrated first?
Exchange Migrator 1.x
Exchange Migrator 2.x
Below is a recommended procedure for migrating in a staged Exchange Migrator (EM) / Domain Migration Administrator (DMA) scenario (Microsoft Exchange 5.5 Organization to Microsoft Exchange 2000 Organization ) when your not sure if the mailbox or User Account gets migrated first.
- Run EMCLI Dirsync with the /MERGEMETHOD of SIDHistory (or SamAccountName), and the /CLEARTABLES switch. You can also use the /Verbose switch if you wish for more detailed output.
- This step will allow Exchange Migrator (EM) to merge any accounts correctly that may have already been migrated with SID History. Please note that you will need at least EM 2.2 SP1 to merge correctly.
Please note that the DMA migration can continue on throughout this process.