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Subject: Re: raid

Author: K. Burcham

Date: 22:26:18 05/26/04

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>>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.

http://www.viaarena.com/?PageID=291#SATA

kburcham



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