On Wed, 21 Apr 2010 10:44:13 -0400, Tony Harminc <[email protected]> wrote:

>On 21 April 2010 02:41, R.S. <[email protected]> wrote:
>
>> IMHO the best way to stop I/O and clear or the reservations is to use HMC
Reset icon.
>
>Sure - it stops the I/O and resets the state of just about everything.
>So does a really big hammer, when swung by a skilled hand. But what
>happens to a DASD write operation that is in progress at the time of
>reset? Hint: Data transfer from the channel stops, but the write does
>not.
>

So what's your point?  Are you suggesting that one should use QUIECE as
the last thing when you ready to shutdown z/OS running in a local sysplex or 
a monoplex - then do a reset?  Obviously you can't do this for a system in
a sysplex.   

Mark
--
Mark Zelden - Zelden Consulting Services - z/OS, OS/390 and MVS       
mailto:[email protected]                                          
Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html 
Systems Programming expert at http://expertanswercenter.techtarget.com/

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