It sounds like you're looking for a managed host who understands mission critical business, I'll contact you shortly.
In the mean time check out
www.RealityCheckNetwork.com
We offer:
Dell PowerEdge Servers
24x7 Managed Support
Data Backups
Security Hardening and Performance Optimization
And my favorite, server monitoring
If something happens to your site whether its 3AM or 3PM - we are notified in 1 minute, you dont have to be next to your computer to tell us your site is broken. Our techs are alerted and begin working immediately to fix your problems!
We have service in US and Amsterdam, NL
ICQ: 4930562