Re: RAID questions...

[Breen Ouellette <the.man@breeno.net>]

Otto Moerbeek wrote:

>On Sat, 1 Jan 2005, Chris Weiss wrote:
>  
>
>>When doing the array verification ("raidctl -iv raid0"), I get about a hundred
>>or so soft errors across all 4 devices.
>>Jan  1 03:32:46 cartman /bsd: wd1a: DMA error reading fsbn 2800992 of
>>2800992-2801023 (wd1 bn 2801055; cn 2778 tn 13 sn 12), retrying
>>Jan  1 03:32:46 cartman /bsd: wd1: soft error (corrected)
>>There are some occasional DMA downgrades from UDMA mode 4 to UDMA 3. Is this
>>at all acceptable? I remember reading somewhere that this can be due to
>>interference on the hardware (cable crosstalk, etc.) and that it's just the
>>nature of the beast.
>>    
>>
>
>Bad cabling is the prime candidate. I would try another set of high 
>quality, 80 conductor cables.
>  
>
As a bit of an aside, don't use the gimicky rounded IDE cables, EVER. 
They are junk. Also, ensure that your 80 conductor cable does not exceed 
18" in length.

Breeno


-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.298 / Virus Database: 265.6.7 - Release Date: 12/30/2004