Another Another One Bites the Dust

long ago and far away .... the dasd engineering lab (bldg 14) and dasd product test lab (bldg 15) had these "testcells" where tested stuff under development. that had some number of processes that were scheduled for stand-alone time with a testcell (they had several 2914 channel switches for connecting a specific testcell to a specific processor).

they had tried running a processor with MVS and a single testcell ... but at the time, MVS had a 15min mean-time-between-failure trying to run a single testcell.

I undertook to rewrite IOS (making it bullet proof) so that 6-12 testcells could be operated concurrently in an operating system environment. I then wrote an internal corporate only report about the effort ... unfortunately I happened to mention the base MVS case of 15min MTBF ... and the POK RAS guys attempted to really bust my chops over the mention.

That was not too long after my wife served her stint in POK in charge of loosely-coupled architecture ... while there she had come up with peer-coupled shared data architecture

but was meeting with little success in seeing it adopted (until much later in sysplex time-frame ... except for some work by the IMS hot-standby people).

somewhat based on experience ... we started the ha-cmp project in the late '80s one specific mention

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