Server crash

I had a little glitch with the server this evening about 7pm. As I was finishing up another round of hardware upgrades that needed to be done (case was overheating due to failed fans.) Somehow managed to get an intermittent power connection to one of the CD drives. This caused the machine to lock up. When I rebooted, the last 24 hours of the graph and data was lost. Far as I can tell all previous data is still intact. I'm going to look into possibly a method of backup and restore of this particular data so in the future a system crash does not result in loss of daily data.