I have a sbs2011 server that recently lost a secondary volume due to lack of disks pace. We managed to image the c volume and then recovered the e volume from a backup. The secondary volume "e" had the Exchange mailboxes on it. It crashed because the swap file was also on the E volume and it ran out of space.
The original config was two 250GB hP disks which were mirrored using the hp software raid controller. We broke the mirror and recovered the partitions to a 1TB drive (not HP) - still running on the raid controller. Since the recovery, the server seems to provide resources to the clients but when logging into the server the GUI is very slow to respond. The Backup software also failed to do a bare melt backup after about 10 days and the server needs to be restarted. It times out.
There are no obvious issues and no obvious logs suggesting an issue. I/O on the resource manager looks ok but I'm not too sure of the details.
The partitions have been increased with the c volume going from 120GB to 400Gb and the E volume going from 120GB to 500GB.
I am planning to move the email off the server to Exchange Online soon and then migrate the server to windows 2012. But I am concerned migrating the email may strain the server as I have about 80GB of mail to transfer. Will do one at a time though.
Any thoughts on why might be the cause of the slow performance?