X37 abends have nothing to do with block sizes
Furthermore the role of secondary space allocations was so bad among
programmers that many installations installed a vendor product called STOPX37
because it was easier then actual planning and calculating space.
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On Wed, Apr 22, 2020 at 3:35 PM -0700, "Seymour J Metz" <sme...@gmu.edu> wrote:
Kilobytes? Not unless you started on a 305 or 650. Even on the 650 it was
6,000,000 digits. The disks on the 1401 and 7000 series were somewhat larger,
even before the 1301, and the 2311 larger still. Only the 1130 was close to the
650's mere megabyte.
--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
________________________________________
From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of
Pommier, Rex [rpomm...@sfgmembers.com]
Sent: Wednesday, April 22, 2020 3:07 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: [External] Re: Here we go again;
Agreed. Another thing to remember was that we were dealing with disk volumes
measured in kilobytes or megabytes instead of terabytes. In addition, the site
I cut my teeth on had all removable disk packs that got rotated onto the drives
for processing of each application. Every byte saved per record gave us the
better chance of fitting the entire set of datasets on a single disk set so we
could process it.
Rex
-----Original Message-----
From: IBM Mainframe Discussion List On Behalf Of Charles Mills
Sent: Wednesday, April 22, 2020 12:32 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: [External] Re: Here we go again;
Faulty logic there. A byte here and byte there and pretty soon you have to buy
ANOTHER unit of DASD. It costs the same empty or full, but if it gets nearly
full you have to pay for another.
Charles
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of Gerhard adam
Sent: Wednesday, April 22, 2020 10:06 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Here we go again;
The notion of “savings” was marketing nonsense. The DASD was paid for
regardless of whether it held a production database or someone’s golf handicap.
It cost the same whether it was empty or full. The notion of “saving” was
nonsense and even under the best of circumstances could only be deferred
expenses
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