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View Full Version : Would 2x10k U160 SCSI drives in raid-0 be faster than 1 SATA drive?


Theo404
01-22-2006, 07:52 AM
All in the question. Always liked the idea of going scsi, had a look on ebay, and U160 drives go for CHEAP, could easily get a couple and a controller for little money, would it be faster in raid-0 than an SATA (not sata-II) drive?

nn_step
01-22-2006, 02:15 PM
Two SCSI drives in Raid0 would kill two raptors in Raid0
Try to get some Atlas drives and an adaptec Controller

Theo404
01-22-2006, 02:22 PM
Two SCSI drives in Raid0 would kill two raptors in Raid0
Try to get some Atlas drives and an adaptec Controller

Its statements like that that fuel my lust for scsi.

I'm not talking about spending real money here, I'm talking less than the price of two 80GB SATA-II drives. So I'd be buying fairly old 10k 18GB Ultra160 (not 320) drives, and an old-ish PCI 32bit controller. How does the fact its on the 33mhz PCI bus affect it? What 'bus' do sata drives go through on say, the native SATA ports on the NF4 chipset?

Can anyone find a performance review of two U160 10k drives in raid-0 through the PCI bus?? Looked all day, and cant find anything even close.

nn_step
01-22-2006, 02:31 PM
Hmm PCI bus is limited to a max Bandwidth of 133mb/s
and most 7.2k drives have a read of 65mb/s and most 10k drives have a read of 72mb/s
Thus you will be constricted by the Bus and will only have a 3mb/s advantage over the Sata
and the old SCSI controller isn't going to help
If it is a good controller.. and the money is the same I say go for it

Edit: wrong word

Theo404
01-22-2006, 02:47 PM
Well let me put it this way. Would I get better overall 'feel' performance from 2xU160 SCSI drives raid-0 or a single SATA-II drive?

The two setups will cost about the same. Thats why I asked about the SATA bus on the NF4 chipset, how fast is it?

I'm looking at eva2000s experience with hitachi 7K80s. With a single drive hes getting HDtach readings of around 230Mb/s burst 50MB/s read 12.8ms seek.

nn_step
01-22-2006, 02:51 PM
The 2 SCSI would have a better General Feel if you ask me
Plus if you want to change out your Mobo.. you wont have to reinstall the OS.. you would just have to move the Controller over to the new board