Re: Adaptec AHA2940

Joachim Paulini (
Fri, 03 Jan 1997 17:49:03 +0100

In message <> you write:
>On Thu, 2 Jan 1997, Bernhard Rosenkraenzer wrote:
>> Ive 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 wont 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?

NCR (now Symbios Logic) controllers and Adaptec controllers format disks
in different ways. However, NCR controllers are able to work with
Adaptec-formatted disks, but Adaptecs are not able to work with NCR-
formatted. You may reformat, but you lose your data.

Joachim Paulini                  | Institut fuer Theoretische Physik               | Technische Universitaet Braunschweig