Date: Fri, 11 Aug 2000 13:43:52 -0400 From: Mike Tancsa <mike@sentex.net> To: "Jason C. Wells" <jcwells@nwlink.com> Cc: "chat@FreeBSD.ORG" <chat@FreeBSD.ORG> Subject: Re: 3ware IDE Raid. SCSI killer? Message-ID: <4.3.2.7.0.20000811132733.00d951e0@marble.sentex.ca> In-Reply-To: <Pine.SOL.3.96.1000811090524.25067A-100000@utah> References: <200008110516.BAA10534@sanson.reyes.somos.net>
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At 09:59 AM 8/11/00 -0700, Jason C. Wells wrote:
> > On a big system you could save 3 to 4 times.
> > Let's see some prices on a RAID 10 system with 4 drives
>
>Yep, this is the point I conceded to that other fellow who laid it out for
>me. The real kicker is when drive capacities start going up, the price
>difference becomes more pronounced.
I think we are all making valid points here, and I agree very much with
what you have written in your post. Perhaps to clarify a general point I
was trying to raise by example around the issue of cost. I work for an ISP
where our IT costs are obviously quite significant in this very competitive
marketspace. When I do my hardware budget, I generally cost it out by
project/service area. For me USENET storage is pretty hard to justify as
its viewed generally as a cost as opposed to a value add-- i.e. compared to
web site storage space, and the most important one email, USENET is at the
bottom of the list priority wise for our customers as a whole. So for my
case, IDE RAID, (if the performance is acceptable) is a perfect fit. If the
RAID0 stripe dies, half a day's news is gone. Big deal. I pop in a new
cheap drive, and let the 'porn/warez/mpegz' start gushing in again.... But,
compared to something as important as my mail spool, I'll stick to SCSI as
I have found the drives to be that much more reliable, and worth the extra
cost.
So, in summary, think case by case basis as opposed to overall 'bye bye
SCSI'. Need a big ass USENET spool, perhaps IDE RAID will do it for
you. Need a massive tmp Amanda spooling area ? Perhaps IDE RAID as
well.... High performance, high availability mail spool ? Perhaps not... yet.
---Mike
------------------------------------------------------------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications mike@sentex.net
Cambridge, Ontario Canada www.sentex.net
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