General rules for HCD activation
It is easier to add than to remove (or alter) devices.
For remove, you have to vary/configure device/chp offline. Where?
Everywhere on the CPC, that means each LPAR.
It is nothing weird in having multiple non-sysplexed LPARs on CPC and
dynamict activation.
For dynamic activation when multiple z/OS LPARs are active there is
following method:
- do the checks, vary offline altered devices on every LPAR, repeat
ACTIVATE TEST
- on every system except last perform ACTIVATE SOFT
- on last system perform ACTIVATE without the SOFT. That will also
update HSA and since then every system will have definitions in sync.
- upload IOCDS on Support Element. DON'T FORGET IT.
Personally I used to start with "the last system" - that means HSA
update, and then ACTIVATE SOFT on rest, however the "more recommended"
way is the above.
Remarks:
Every system need access to IODF file. It can be shared file
(convenient) or just copy of the file. How to get a copy of VSAM file is
out of scope ;-) however take care - this file HAS TO BE SINGLE EXTENT.
Check it before you start.
Assuming no changes in CF (and channels to CF), it doesn't matter
whether given z/OS image is sysplexed or not.
Sysplex members on different machines always have different
configuration, even when it comes from single IODF file. It's obvious:
every machine has its own set of channel, etc. And sysplex member may
have some non-shared devices.
For shared devices within sysplex there is no black magic, of course
there are devices crucial for sysplex like CDS volumes, however you will
find it out when trying to offline them.
--
Radoslaw Skorupka
Lodz, Poland
W dniu 21.05.2020 o 20:27, Mark Jacobs pisze:
I have a followup question on this topic. In addition to the 8 z/OS systems in
the sysplex, we have several standalone monoplex z/OS systems on the same CEC.
If I perform the HCD work in the sysplex, then transfer the IODF file to one of
the standalone systems, perform a software and hardware activation there, will
the IODF tokens match between the hardware and software in the members in the
sysplex once they're all IPLed with the new IODF?
My goal is to keep everything in sync without needing a POR of the processor.
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