On Tue, 11 Mar 2025, at 19:53, Radoslaw Skorupka wrote:
> W dniu 07.03.2025 o 18:49, Jeremy Nicoll pisze:
>> If this "tech LPAR" is specifcially limited to emergency use that might be
>> ok, but where I worked the sysprog LPARs had no access to any of the
>> disks used by live systems - so I can't see how one could use such an
>> LPAR to fix anything.
>
> It is up to you how the tech LPAR is set up. Including I/O definition.

NO, it wasn't up to us.  I worked for a bank.  No auditor would allow
a systems programming test system to have ANY access to live system
disks.

We did (obviously) have access to the sysprog lpars' volumes from 
elsewhere, so we could maintain the systems on them.

> However you can have "emergency" IODF or OS config just for emergency 
> purpose. 

I suppose so, but it was probably simpler to use the designed / tested DR
processes.

-- 
Jeremy Nicoll - my opinions are my own.

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