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SubjectRe: Adaptec AHA2940
On Fri, 3 Jan 1997, James L. McGill wrote:

> > I've been using an AHA2940 for ages, and it works fine. However, there are
> > some problems with changing SCSI adapters, e.g. a harddisk formatted with
> > an Adaptec controller sometimes won't work with a NCR controller, and vice
> > versa.
>
> b..b..b..b..But... SCSI is supposed to be interchangeable, a fundamental
> goal of the interface design. This is alarming news. Is NCR or Adaptec
> at fault?

They are...you just might want to reformat after interchanging. NCR and
adaptec boards like different geometries...and I've moved disks from
adaptec to NCR (never the other way). The disks work, but fdisk complains
a lot about the geometry being funny.

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