SBP-2 study group

Peter Johansson PJohansson at
Wed Sep 20 16:12:10 PDT 2000

* From the T10 Reflector (t10 at, posted by:
* Peter Johansson <PJohansson at>
At 02:39 PM 9/20/00, Gene.Milligan at wrote:

>Backward compatibility is desirable with either path.

Pardon me for rearranging the order of your comment, Gene, but I wish to 
emphasize that your point above is preeminent. I strongly agree.

Having said that, it is with a certain apprehension that I attempt a 
response to the rest. Discussions on cultural differences among standards 
groups often reach a speedier conclusion in face-to-face meetings than they 
do in the medium of EMail.

>I would characterize that as work on SBP-3 should be commenced and include 
>the work items discussed in the report. A revision is certainly possible 
>but a follow on standard is often more palatable. When standards are 
>implemented, some manufacturers feel uncomfortable with no longer having 
>the published standard the same as the one they implemented.

I think the distinction between a "follow-on" vs. a "revision" standard is 
cultural and likely a distinction without much of a difference.

For example, products compliant with IEEE Std 1394-1995 do not have a 
problem with the advent of IEEE Std 1394a-2000, nor will they have a 
problem with the eventual advent of IEEE Std 1394-200X in some future year. 
The pertinent standard does not cease to exist with the publication of 
revised or follow-on efforts.

Many standards bodies follow this model. Which is not to say that others 
are right and T10 is wrong; it is just to point out that this is not a 
truly substantive matter that impinges upon the utility of the standards in 

At this point I could present my own opinions on the naming and numbering 
of standards, SBP in this case, but I sincerely believe that the dialog 
will be more compact if conducted in person instead of over the reflector.


Peter Johansson

Congruent Software, Inc.
98 Colorado Avenue
Berkeley, CA  94707

(510) 527-3926
(510) 527-3856 FAX

PJohansson at

* For T10 Reflector information, send a message with
* 'info t10' (no quotes) in the message body to majordomo at

More information about the T10 mailing list