ongoing has already mentioned David Edmundson's project, but I must say this is the most interesting use of an E450 I have ever seen!
Glad to see he's using the Sun System Handbook E450 page if he runs into any problems, though we don't describe this particular type of environment or use.
Next, perhaps David should look at building a shock-absorbing rack mount, and a Sun Fire B1600 Blade System Chassis for expandability, hot-swapping, and more cargo space!
See also: SysHandbook