On Tue, 26 Sep 2017 12:50:37 -0400, John Eells wrote: > >And...something did. The zPDT systems of the day did not support the >necesary subset of the ECKD command set, exposing a bug that could be >circumvented by using the old one until the fix was available. We never >found this in testing because (suprise!) no real disk devices are >available that do *not* support ECKD as far as I know, and those from >IBM have not been available for 20 years or more. > Clearly IBM has a sunset policy for support of hardware: You can't run z/OS 1.13 on a 3031. But is it different for peripheral devices? Was IBM claiming to support the device that exposed the problem, or could it have been called user error; unsupported sustem?
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