How was your server "Down"?
Was it dead? Apache Stopped? MySQL broke? Please explain exactly the circumstances so we can better see what services stopped performing and tell you how to better monitor your server service by service, as well as item by item (Disk space? Process Load?)
Call me up, 619-227-8845 and lets chat.
Chris Jester
SplitInfinity Networks, INC.
http://www.splitinfinity.com