tuartboy said:I don't know what you mean by a smaller platter. Physical size is still 3.5". The platter density is 100Gb per platter on the hitachi. Unless the raptor has less than 1 platter, there is no way that it can have a smaller platter "size".
The Raptors use a physically smaller diameter platter. Although the chassis is 3.5", the platter is considerably smaller in diameter than a typical 3.5" drive.
SCSI drives are used in servers and are made in order to be. They often are better manufactured and even come with 5 year warranty instead of the standard 3. Not sure about the raptor.
The Raptor essentially IS a SCSI 10,000 RPM drive mechanism with IDE or SATA electronics bolted on.