Good hardware Resources

Hey guys,

Im in an environment where we build computers 10 at a time per day.
And sometimes we run into problems with buying hardware that is not
supported with some operating systems. For example the other day I ran
into a problem trying to build a Debian Box with Serial ATA Raid but
the controller was not supported.

What im asking is if anyone knows of a website or a place that I can
find good resources on hardware that is supported with what. Like
motherboards, RAID controllers, etc..

It would help a lot.

Thanks