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Date:      Fri, 26 May 2000 15:34:08 -0600
From:      "Kenneth D. Merry" <ken@kdm.org>
To:        George Morgan <gemorga2@vt.edu>
Cc:        freebsd-scsi@FreeBSD.ORG
Subject:   Re: Best scsi controller for application...
Message-ID:  <20000526153408.A41647@panzer.kdm.org>
In-Reply-To: <392E9CED.29541.D0CA9@localhost>; from gemorga2@vt.edu on Fri, May 26, 2000 at 03:49:01PM -0400
References:  <392E9CED.29541.D0CA9@localhost>

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On Fri, May 26, 2000 at 15:49:01 -0400, George Morgan wrote:
> I'm going to recommend a particular scsi controller (or controllers) 
> to a friend of mine and wanted to get some advice.
> 
> Unfortunately the machine will probably be multiple booting some 
> version of Windows (98 or 2000) and FreeBSD.  The controller will 
> have at least a Plextor CD-ROM (UW scsi) and an IBM UW, U2W 
> or U160 SCSI hard drive.  I'd also like a recommendation on what 
> kind of scsi hard drive to choose (best support of tagged command 
> queueing, tech support, etc)  There may be some legacy devices 
> (fast narrow) so the controller needs to support brand new and 
> slower devices.

I would recommend getting an Adaptec controller.  Before someone screams,
you can also get a Symbios/LSI controller or QLogic controller.  All are
well supported, but the Adaptec boards are easiest to find.

You should get a controller that has the combination of connectors you need
for whatever you're going to put on it.  Some controllers, like the Adaptec
29160 have a SCSI-SCSI bridge chip that lets you put single ended and LVD
devices on the same bus.

The 29160 would probably fit your criteria -- it has an internal Ultra160
connector, an internal Ultra Wide connector, and an internal 50-pin
connector.

The only caveat about the Adaptec boards right now is that the Ultra160
controllers will only run at 80MB/sec with 4.0 or -current.  You need
Justin's patches that he posted to the -scsi list a couple of weeks ago in
order to do Ultra160.  Because of that, a Symbios/LSI controller or a
QLogic controller might be better if you have to have Ultra160 right now.

As for drives, I'd recommend high end Seagate and IBM drives.  i.e. IBM
Ultrastar and Seagate Cheetah and Barracuda.

Ken
-- 
Kenneth Merry
ken@kdm.org


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