This may not be the place to ask this but here goes. I was doing a search on pricewatch and found something that struck me funny. This drive: http://www.7bytes.com/specs.cgi?FCST18GB+tmp/product is $30.28 And this drive:http://www.7bytes.com/specs.cgi?HDSCSISEA1+tmp/product is $184.42 They are both 18GB SCSI drives. The first one is fibre channel. What does that mean?