Lazlo,
>> Thank you for your suggestions. Looks like I need to buy SCSI disks.
>
> Well before you go do that try the areca SATA raid card
Yes, by all means spend $200 and buy the Areca or 3Ware RAID card - it's a
simple switch out of the cables and you should be golden.
Again - you should only expect an increase in performance from 4-6 times
from what you are getting now unless you increase the number of disks.
- Luke