Is it true that SCSI is less intensive on a servers CPU? I'm in the process of pricing up a new web server and I've been advised that by choosing a SCSI drive over an EIDI, I will be able to get more performance out of my servers processor. Is this the case? Or is the server salesman just trying to increase the order value?
SCSI allows stacking of commands on the bus, and doesn't suffer from the master/slave thing that IDE has. Traditionally (but not really the case anymore) SCSI drives were faster than IDE drives, but with ATA133 and advances in technology, they're comparable.
If you're just going with one drive, I don't see it making a huge difference. If you need RAID, or plan to have multiple drives, SCSI is probably worth it.
If you haven't checked out serial ata yet, that can give you a really great value for your dollar, the harddrives cost about the same as IDE drives, but are very fast, amazingly so, I just built some boxes with gigabyte mobos and sata harddrives and they are very fast, and didn't cost very much to put together.
There's some compatibility things if you are going to run linux, so you'd want to do some research before starting.