On Tue, 27 Mar 2018 13:22:51 -0400, John Eells <[email protected]> wrote:

>David Boyes wrote:
>> On 3/27/18, 9:48 AM, "IBM Mainframe Discussion List on behalf of John Eells" 
>> <[email protected] on behalf of [email protected]> wrote:
>>
>>> Ah, so that's what you meant.  I hadn't inferred that from your earlier 
>>> post.
>>
>> Sorry, replies crossed in the ether.
>>
>>> As the original builder of the ADCD systems (originally created to
>>> support P390s)
>>
>> Didn't the P370 also support AWSTAPE? I don't remember -- that was a long 
>> time ago. Or were you just using P390 as a generic term?
>>
>>> However, we do not, and have no plans to, deliver the DVD files in AWSTAPE 
>>> format.
>>
>
>I'd quite forgotten about P370, in part because I don't know that it was
>ever available external to IBM.  It might well have been what the AWS*
>things were ogiginally written for, and if so, I stand (well, sit, at
>the moment) corrected.
>
>But in any event, we have no plans to support AWSTAPE format for
>software delivery in general.  It's not at all clear to me that it would
>solve anything that is not already solved by retrieving the files from a
>workstation file system (hard drive or DVD), either, and until someone
>shows me how it would be, I don't know why I'd support the effort to do
>it.  (And, as it happens, it's not actually trivial to implement it in
>the software delivery process.)
>
>--
>John Eells
>IBM Poughkeepsie
>[email protected]
>

I have quite enjoyed reading this thread in the digest version over the last 
few days. 

For historical accuracy, I wanted to point out that service delivery on optical 
media from IBM  is something that I personally was involved with in with IBM 
sofware delivery back in  1998-1999.  Customers could first order service from 
IBM and request that the delivery media be CDROM instead of tape in early 1999. 
  Preventive service (RSU) for VM could be ordered from IBM on CDROM in January 
1999.  Not sure why it could not be trivial for z/OS, but it, frankly, was 
trivial for VM.  In March 1999, corrective service could be ordered on CDROM.   
So this really is not some new problem for IBM service delivery.  Been there, 
done that, got the T-shirt. Though the web page about ptf service on CDROM 
media was up for year into the 2000 decade, it is no longer up on the VM 
website. You can still find it on the web archive wayback machine:

https://web.archive.org/web/20040822203309/http://www.vm.ibm.com:80/service/vmcd.html

I found a hard copy on my book shelf of the IBM S/390 Bulletin Issue 24 April 
1999 which had an article on page 14 about the availability of service on 
CDROM. These bulletin documents which were produced out of Boeblingen by the 
S/390 division in both glossy hardcopy and pdf format contained articles of 
interest for the entire S/390 product line were available in pdf format for 
download, but I cannot find them online any longer.

I reckon that z/OS might finally exploit  service delivery on optical media on 
demand one day, a mere 20 years later than VM first did it.  I see little 
reason to reinvent the optical media wheel for service delivery, and I concur 
with John Eell's observation  that optical media's days are numbered. This 
problem was solved at IBM long, long ago.  Putting an emulated tape metadata 
file format on that media, whether OMA/2 or AWS, or a different metadata format 
should be trivial if it is really required.  Emulated tape is not difficult. In 
our products at FSI, emulated tape was even extended  across the Internet in 
encrypted format. Others have done it, too.   The only way to avoid corrective 
service delivery is to write perfect code the first time to eliminate the need 
for corrective service. Good luck doing in that.

--
Gary Eheman
Funamental Software, Inc.

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