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Date:      Wed, 12 Jan 2000 07:22:09 -0800 (PST)
From:      Matthew Jacob <mjacob@feral.com>
To:        Andrew Gallatin <gallatin@cs.duke.edu>
Cc:        freebsd-scsi@FreeBSD.ORG
Subject:   Re: 68 <-> 80 pin SCSI converter
Message-ID:  <Pine.BSF.4.05.10001120718240.92347-100000@semuta.feral.com>
In-Reply-To: <14460.38703.454117.921172@grasshopper.cs.duke.edu>

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> 
> I apologize for what may be a fairly silly question: Is there any
> clean way to attach a 68-pin drive to an 80-pin SCA backplane?
> 
> My group is purchasing a server-class box which comes with an U2
> hot-pluggable backplane with 80-pin SCA connectors.  We are hoping
> to reuse some existing 68-pin U2 cheetahs from another machine.
> 
> I have looked for 68-80 pin converters for a while & all I can find
> are adapters which allow you to attach an 80-pin SCA drive to a 68-pin 
> cable.  I have not found any method for attaching a 68-pin drive to an 
> 80-pin SCA backplane.  Does such a best exist?

I'd try http://www.amp.com to get a part no, if it exists, and then search
around for someone who'll sell it. I'd also check Kingston- the folks who
make slide rail carriers may have this.

I'd doubt that this is a great idea because the whole point of SCA is it
combines signal power and mounting in one deal- to go form SCA, you'll
have to come out with both the MOLEX +5/+12 connector, the 68 pin cable
connector, and it won't necessarily have the right mounting and any length
of 68 pin longer than 50mm is gonna add signal noise.




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