Sure, the 120GB drives you are refering too are probably quick and reliable, but here are the key features of these drives which make them better than any eide drive on the market, and better than most SCSI drives on the market:
-smaller disk platter = quicker access time
-SATA 150 (tests show 133) MB per second = quicker access time
-Smaller drive space total = quicker access time
-10,000 RPM = faster access time
-8 MB cache buffer = faster and more stable transfer speeds.
-37.6BG = plenty of space to run a primary HD and OS installation.
The comment about the 4=8 for same speed and stability refered to the fact that 4 SATA 150 disks in a RAID of 0 + 1 will have an optimal stability level and higher speed than a SCSI RAID of 8 disks in the same RAID configuration (due to SCSI transfer speeds per channel, and how fast the PCI bus is, and how many SCSI controller cards you would need to have enough channels to make the speed the same.)
Sure, you will get much more storage from a 120GB or a 250GB drive, but it will cost a lot more, and be slower than this drive. This drive has out performed all of the best SCSI devices out there, which says quite a bit at it's low 110$ price tag.
Here is a better solution;
Ask the tech if they want a storage device or a faster bootup. Get them this drive for a faster bootup answer (provided that you also get then an SATA controller card or they already have SATA) or get them a much larger drive if they want storage.
Problem solved.
Ideal storage and backup suggestions:
Backup USB/Firewire:
http://www.newegg.com/app/ViewProductDe ... 208&depa=1Storage EIDE:
http://www.newegg.com/app/ViewProductDe ... =14&depa=1Storage SATA:http://www.newegg.com/app/ViewProductDesc.asp?description=22-148-017&catalog=14&depa=1
http://www.newegg.com/app/ViewProductDe ... =14&depa=1Any else have any suggested items?