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computers / comp.sys.dec / Re: Alphastation 200 - replace 50 pin scsi drive with 80 pin?

SubjectAuthor
* Alphastation 200 - replace 50 pin scsi drive with 80 pin?Chuck Wagner
+- Re: Alphastation 200 - replace 50 pin scsi drive with 80 pin?Grant Taylor
`- Re: Alphastation 200 - replace 50 pin scsi drive with 80 pin?Stephen Hoffman

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Subject: Alphastation 200 - replace 50 pin scsi drive with 80 pin?
From: Chuck Wagner
Newsgroups: comp.sys.dec
Date: Mon, 31 Aug 2020 21:19 UTC
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Subject: Alphastation 200 - replace 50 pin scsi drive with 80 pin?
From: chuc...@gmail.com (Chuck Wagner)
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So I've got an Alphastation 200 that I haven't turned on in about 20 years that won't boot, and from time to time after a reset the hard drive disappears.

Anyone know if an 80 pin drive like a DEC DS-RZ2CA-LA will work with a 50 pin to 80 pin adapter board?

Thanks - Chuck


Subject: Re: Alphastation 200 - replace 50 pin scsi drive with 80 pin?
From: Grant Taylor
Newsgroups: comp.sys.dec
Organization: TNet Consulting
Date: Tue, 1 Sep 2020 14:18 UTC
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From: gtay...@tnetconsulting.net (Grant Taylor)
Newsgroups: comp.sys.dec
Subject: Re: Alphastation 200 - replace 50 pin scsi drive with 80 pin?
Date: Tue, 1 Sep 2020 08:18:28 -0600
Organization: TNet Consulting
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On 8/31/20 3:19 PM, Chuck Wagner wrote:
Anyone know if an 80 pin drive like a DEC DS-RZ2CA-LA will work with a 50 pin to 80 pin adapter board?

I've run into a similar problem with older SUNs.

Yes, I've gotten a 50-pin SCSI-I / SCSI-II to 80-pin SCA adapter and /some/ /specific/ 80-pin SCA drives to work.

The crux of the matter seems to be that SCSI-I / SCSI-II is /narrow/ and SCA drives can be /narrow/ and / or /wide/.  So you must find an 80-pin SCA drive that supports /narrow/ operations.

Beyond that, it's a game of what will physically fit in the space that you have.

Thanks - Chuck

You're welcome, and good luck.



--
Grant. . . .
unix || die


Subject: Re: Alphastation 200 - replace 50 pin scsi drive with 80 pin?
From: Stephen Hoffman
Newsgroups: comp.sys.dec
Organization: HoffmanLabs LLC
Date: Wed, 2 Sep 2020 19:56 UTC
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From: seaoh...@hoffmanlabs.invalid (Stephen Hoffman)
Newsgroups: comp.sys.dec
Subject: Re: Alphastation 200 - replace 50 pin scsi drive with 80 pin?
Date: Wed, 2 Sep 2020 15:56:54 -0400
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On 2020-08-31 21:19:44 +0000, Chuck Wagner said:

So I've got an Alphastation 200 that I haven't turned on in about 20 years that won't boot, and from time to time after a reset the hard drive disappears.

Anyone know if an 80 pin drive like a DEC DS-RZ2CA-LA will work with a 50 pin to 80 pin adapter board?

Try it. There was wide-hostile SCSI gear around back then, which was later replaced with wide-friendly gear.
The wide-hostile gear didn't ignore the use of the fourth addressing pin. The wide-friendly gear did.
Or cluster with and boot from an OpenVMS server running on something newer, and run the AlphaStation 200 system diskless.


--
Pure Personal Opinion | HoffmanLabs LLC

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