No SE at all means your z/OS (or any other) system is still working, but
no HW changes are possible, no IPL, many HW command will fail, etc. Deep
sh*t.
One of two SE failed means you can peform everything you want, including
STP. Maybe STP setup would be impossible (I haven't checked), but I'd
bet it is also possible.
I've been working with single SE (primary failed) for some time. It
wasn't my dream, but I could live with it.
--
Radoslaw Skorupka
Lodz, Poland
W dniu 2016-03-23 o 23:58, Jesse 1 Robinson pisze:
We happen to have a failed SE at the moment. It's the 'alternate', so no
immediate impact at all. But the question has been raised, what would happen if
the primary failed also? I remember a case years ago (1990s) when there was
only one SE in a box, and it went bad. Just meant that we could not IPL or make
configuration changes in the meantime, but it did not affect any running
system. In those days we had external timer boxes (9370?), so the sysplex was
unaffected. Now we have STP, which I believe is a component of the SE.
If a modern box had no working SE for some period of time, would the sysplex
across multiple CECs be affected?
.
.
.
J.O.Skip Robinson
Southern California Edison Company
Electric Dragon Team Paddler
SHARE MVS Program Co-Manager
323-715-0595 Mobile
626-302-7535 Office
[email protected]<mailto:[email protected]>
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