Author: Robert Hyatt
Date: 08:52:48 05/27/04
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On May 27, 2004 at 01:26:18, K. Burcham wrote: > >>>Here are some benchtest numbers, but remember these are with large data >>>transfers. I do not think our chess programs will utilize this capacity. >>> >>>http://www.viaarena.com/?PageID=311 >>>http://www.viaarena.com/?PageID=312 >>> >>>kburcham >> >>Is this SCSI raid or EIDE raid? SCSI raid works. I run it everywhere. EIDE >>raid is another matter when talking about performace. My dual is running >>software raid0 and it is faster than non-raid, and as good performance-wise as >>hardware raid excepting it increases interrupt traffic since hardware raid >>generates one interrupt per transfer while software raid generates N. Software >>also uses CPU cycles to compute the raid parity data. Hardware does it outside >>the CPU. > >The VT8237 offers data transfer rates up to 150MB/sec per port. It offers direct >support for 2 SATA devices plus extended support for an additional 2 SATA >devices. >VT8237 uses a software controlled RAID set-up. >Bob, there are ATA and SATA in the benchtests. I know. And I have tested the same things here as some of our dual xeon boxes came with hardware raid using ATA drives. In general, it doesn't feel "good". IE with SCSI drives under heavy load, system response feels normal. With non-SCSI drives under the same load, things feel _very_ sluggish... > >http://www.viaarena.com/?PageID=291#SATA > >kburcham
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