Backup solutions for servers in the shop...

[dj]

I've identified 5 windows servers in the shop that need to be backed up and preferably backed up as a cloned image disk. That is to say, day-to-day backups of the data are covered (somewhat) but what I really want is a central server that stores ghosted images of each server.

So when (not if) a hard drive fails in any one of the servers, I can pop in a new hard drive and restore the cloned image from the central server.

Anybody using this type of software? What are people using in their shops?