Jesse Keating wrote: > Since there are now 10K rpm SATA disks, an array of 16 of those will out > perform most 8 disk SCSI arrays, although really top end 15K RPM drives > ( not mid quality 15K, super high end) will still perform better. there is only one problem, SATA disk still don't support TCQ(tagged command queuing). SCSI is the true source of power ;-) > For prices, figure ~ 1K for 2 8port 3ware SATA controllers, and $300/16 > for 16 74gig 10Krpm WD Raptor disks. On the SCSI side, you're looking > at $800~ for a 2 channel 2200S u320 raid card, and the drives are > around $600~ for 15K rpm 73gig drives. If you wanted to use 146gig > drives to match capacity (8x 146 == 16x 74) then you're looking at > $700~$800 per disk. So the prices aren't that much different, but you > do get more density with the SATA stuff. I haven't seen any 3u dual > xeon systems that can sport 16SCSI hotswap disks, yet we sell a 3u dual > Xeon that supports 16 hotswap SATA disks. tomshardware did that test[1] and SCSI is unbeatable, but price is 2x. [1] http://www.tomshardware.com/storage/20031114/
