I have a single Exchange 2010 SP1 server, member of a 2008 domain. Everything works fine. The server has been setup but almost idle till, recently, users shifted to it with some 6 GB volume of emails from their old IMAP email system.
Overnight, some 80,000 log files were generated and the drive containing Windows got jammed. To solve this, I thought of backing up Exchange and have the log files deleted. Unfortunately, Windows Server Backup could not create a shadow copy because of space issue on the Windows drive (C) and thus backup could not start. To solve this, I moved all log files to another drive and kept only the latest few 100's.
Now, it can backup with success. However, every time it ends up with a warning that the backup file generated cannot be used to restore an Exchange DB. Also, log files are not deleted.
To overcome this situation, I created another DB and had it mounted. However, I am not sure how to make it the master DB so that I can dismount and eventually delete the default DB.