On Friday, 02/20/2009 at 06:04 EST, Tom Duerbusch 
<duerbus...@stlouiscity.com> wrote:

> 1.  It is hard to accidently shutdown your production VM system from 
another 
> LPAR.
> At one time, we have all shutdown the production VM system when we 
thought we 
> were on test.

Good news is that z/VM 5.4 included a SYSTEM option on SHUTDOWN.   An 
option in SYSTEM CONFIG decides if it is required or optional.

If your test image and your production image have the same 
System_identifier, then you will find the safety net is there, but is 
laying directly on the ground.  Be careful.

Alan Altmark
z/VM Development
IBM Endicott

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