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Re: Storage (8*IDE HDs) any experiences?



On Thu, Apr 26, 2001 at 08:02:30PM -0500, Rahul Jain wrote:
> On Thu, Apr 26, 2001 at 01:39:01PM -0500, Dimitri Maziuk wrote:
> > Hi all
> > 
> > I notice there are these new-fangled motherboards with 2*ATA-100 and
> > 2*ATA-33 ports. With 75GB disks, that baby should give us 600GB of raw
> > disk space (8 drives) at around $2K US. Sounds attractive, considering
> > that el-cheapo RAID boxes of similar capacity are around $10K.
> > 
> > Anyone runs [Debian] Linux on an 8-drive box like that? Is that
> > supported at all? Any gotchas I should know about? The mobo I'm looking
> > at is ABIT BH6-II.
> 
> Be warned of the issues with having two hard drives per IDE channel. I know
> that there were reports of massive corruption when using DMA with specific
> models of WDC and Maxtor drives on the same channel in DMA mode. You'll also
I've heard bad things about WDC and Maxtor drives in general, been sticking
with IBM for the most part (except for this Quantum Fireball AS).

> face some pretty serious performance slowdowns when accessing both drives at
> the same time, since most IDE drives cannot do disconnect/reconnect like SCSI
> drives can. The best way would be to have one IRQ used for each IDE drive,
> which is pretty tough to do on an x86 system. Hopefully your BIOS can allow
> this sort of setup, since IRQ sharing still causes a bit of a performance hit.
IDE causes a bit of a performance hit, I don't think we're talking high
speed file access here though... cheap is the objective.

> 
> -- 
> -> -/-                       - Rahul Jain -                       -\- <-
> -> -\- http://linux.rice.edu/~rahul -=- mailto:rahul-jain@usa.net -/- <-
> -> -/- "I never could get the hang of Thursdays." - HHGTTG by DNA -\- <-
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