Exchange 2010 - Mail Database Recovery after Database Portability Applied
Background:
We had a city-wide power failure at Office A and as a result Exchange Server A (ES-A) was taken offline for an extended period of time. The last good backup of ES-A-DB was from the previous business day. The DR plan was enacted and the
ES-A mailbox database (ES-A-DB) was recovered to Exchange Server B (ES-B) as ES-B-DB2. Keeping in mind that a days worth of emails still reside on ES-A-DB.
Process:
I employed the database portability method when restoring the ES-A-DB to ES-B-DB2 at Office B. I rehomed the exchange users in active directory to now use ES-A-DB2. Users are working fine, activesync worked without issue. All is well.
I now face the situation where power has been restored to Office A and the server is available. I have NOT turned this server on yet as I am not sure what the net affect will be on ES-A and ES-A-DB.
The primary goal of the business is to recover the mail items from the missing day that was not backed up and recovered to ES-B-DB2. What would be the best way to do achieve this objective?
This is what I am thinking, though its all theoretical since I've never been in this situation.
- boot the Exchange Server with the network card disconnected
- Dismount ES-A-DB from ES-A
- Remove ES-A-DB from Exchange Org on ES-B
- Process logs and put the ES-A-DB in a Clean state
- mount as recovery database
- copy differential mail items to ES-B-DB2 mailboxes
Anyone have insight on this?
Thanks for your help in advance.
No need to dismount , remove from the org or boot the server w/o a NIC. The association between Exchange and the user is in AD and you already changed that when you set the new database with database portability.
I would just follow the instructions for restoring back to their current production mailboxes (DB2).
http://exchangeserverpro.com/restoring-mailbox-exchange-server-2013-recovery-database/
Try it with a sample mailbox or two and see how it handles the conflict resolution for duplicates.
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