I'm I bit on the overkill when it comes to backup as we dont use SAN's or a budget that allows for clustering, VMWare or VM, so I use Backup exec 12 to LTO4, Ntbackup for AD servers to LTO2. SQL, exchange and data to exterenal 1.5 TB USB on each server including the Linux box, and one office using Shadow protect.
MCITP:EA/SA, MCSE, MCSA, MCDBA, MCTS, MCP+I, MCP