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Date:      Tue, 14 Dec 1999 22:20:34 -0600
From:      Nathan Kinsman <nathank@mentisworks.com>
To:        Terry Lambert <tlambert@primenet.com>, chat@FreeBSD.ORG
Cc:        Brett Glass <brett@lariat.org>, dscheidt@enteract.com
Subject:   A case for IDE based servers, was Re: dual 400 -> dual 600 worth it?
Message-ID:  <38571712.4010281D@mentisworks.com>
References:  <199912141853.LAA19833@usr02.primenet.com>

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I wont speak for IDE drives in general.  However, I'm currently using
Maxtor DiamondMax Plus hard drives for servers with moderate or lower
workload.  They have DualWave™ twin processors, 2 MB 100 MHz SDRAM cache
buffer, 7200 RPM, and run on a UltraDMA 66.  On a simple "dd" benchmark,
I get 20 megs per second (yeah I know, single tasking).  Coupled with an
Arco DupliDisk IDE RAID 1 controller, this gives me up to 40 megabytes
per disk of fault tolerant storage for around $500.00-$600.00 USD.  This
is also the price of one WD Enterprise 9 gig SCSI last I checked (a few
months ago).  I freely admit there are advantages to using SCSI, but
with a the above configuration I can put together entire clusters of IDE
RAID servers for the price of a single SCSI RAID system.  Clearly any
performance advantages of SCSI end at that point.

DupliDisk-Bay 5.25  IDE RAID 1 Mirroring Controller  ......$250 USD
20.40GB Diamond MAX Plus  .................................$183 USD
20.40GB Diamond MAX Plus  .................................$183 USD

Along with rest of server hardware:
AMD Athlon 500  ...........................................$181 USD
Asus K7M Motherboard  .....................................$150 USD
256 Megs SDRAM  ...........................................$220 USD
Intel EtherExpress Pro 100+ NIC  ..........................$ 60 USD
3DCool Tornado 1000 Case  .................................$155 USD
(supercooling!)
Floppy, keyboard, etc .....................................$ 50 USD
approx

And there you go, a high performance hardware RAID 1 server for FreeBSD
at around $1400 USD, or the price of a cheap RAID controller.  Buy 6 of
them and build a server cluster that would massively outperform a
similarly priced Dell Poweredge 4350 with Dual Pentium 600s and mirrored
18 gig SCSI.

Prices obtained by Pricewatch.  http://www.pricewatch.com

-
Nathan Kinsman, |nathan@kinsman.nu| don't send spamtrap@mentisworks.com
Network Integrator, Systems Architect |FreeBSD/Linux/Netware/MS Windows|
Phone/Fax: |Chicago| +1 312 803-2220 |Sydney| + 61 2 9475 4500 
http://nathan.kinsman.nu | http://www.mentisworks.com


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