I am shooting for top notch reliability.SCSI. SATA's fast, but not as reliable, IMHO.SCSI is *expensive*. Unless you have huge databases that need the speed of 10K or 15K RPM drives, SATA is the way to go.
The days of SCSI ruling are rapidly coming to an end.Now that SATA has NCQ and TCQ native (if you are using the proper controller), 5 year warranties, 10K rpm, and sub 10ms access times, the differences are almost gone.
The only time SCSI rules now is in the heavy server market where you're looking at 15K rpm, hot swap SCA drives running on fibre channel.
In terms of most vanilla servers, your performance/dollar ratio is in SATA. -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.361 / Virus Database: 267.12.5/149 - Release Date: 10/25/2005