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Large build up of log files after Exchange 2010 Migration - SBS 2003 to 2011

I have migrated from SBS2003 to SBS2011 and the mailboxes have moved successfully to the new server prior to the move I changed the location of the Exchange Data to another partition and that is where the mailboxes have migrated to. On the C:\ (OS) partition there is an extreme build up of log files (80Gb) in the "Program Files\Microsoft\Exchange Server\V14\Mailbox\Mailbox Database" 2012030523 directory

Can these be safely removed? I have run a backup to see if that would purge them but it doesn't.

I also tried "Move Exchange Server Data" from the SBS Console (just to check the location setting) and found the wizard will not run and gives an error

"The Exchange Server data cannot be moved. A critical task, such as backup or system updates, is running, Try again after the task finishes""
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BRONZE EXPERT
Commented:
NO, do NOT  remove them manually.
The size of log files was increased because of the move mailbox commands.
And you probably did not enabled circular logging for the time of mailbox migration.

The logs should be cleared when exchange backup will complete, but it seems it is still running or has not finished properly.
BRONZE EXPERT

Commented:
Try to check if backup is still running and if the server is fully patched.
Try to restart the server and run the backup again.
Try to use BPA and check for errors.
As the last resort you can try to temporary enable circular logging until you manage to make work backup properly.
http://blog.mattsampson.net/index.php/circular_logging_exchange_2010?blog=1

Author

Commented:
It is in fact still running the back as you say. I'll update you when it completes.

Author

Commented:
Backup purged the logs. Thanks for the assurance :)

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