Additionally, he said that he *had* been planning to use the same volser 
for both systems SPOOL volumes.  SAPL's "DEVICE NUMBER:" field will let 
you point to a specific device address for the IPL volume, but the first 
matching SPOOL volser(s) would be found.  If that was from the system 
without the maintenance, the wrong SDFs would be used.  Your gun, your 
foot.

Duplicate volsers are simply an invitation to self-imposed disaster.  They 
can be used if you are _both_ experienced ... and LUCKY!
But it is _your_  _job_ on the line!  Why expose yourself to potential 
problems when there are other, perfectly reliable, means to avoid 
problems?

Mike Walter
Aon Hewitt
The opinions expressed herein are mine alone, not my employer's.



"August Carideo" <august.cari...@avon.com> 

Sent by: "The IBM z/VM Operating System" <IBMVM@LISTSERV.UARK.EDU>
10/20/2010 12:01 PM
Please respond to
"The IBM z/VM Operating System" <IBMVM@LISTSERV.UARK.EDU>



To
IBMVM@LISTSERV.UARK.EDU
cc

Subject
Re: Duplicate VOLSERs at IPL






Good point
Yes from other posts I can see that
will most likely at least rename so called fallback
and look into that exec
thanks
Augie



 
             "Schuh, Richard" 
             <rsc...@visa.com> 
             Sent by: The IBM                                           To 

             z/VM Operating            IBMVM@LISTSERV.UARK.EDU 
             System                                                     cc 

             <ib...@listserv.u 
             ARK.EDU>                                              Subject 

                                       Re: Duplicate VOLSERs at IPL 
 
             10/20/2010 12:52 
             PM 
 
 
             Please respond to 
               The IBM z/VM 
             Operating System 
             <ib...@listserv.u 
                 ARK.EDU> 
 
 




Not adequate. What happens if one of the devices at the lower address 
fails
to respond to the IPL roll call? That is a case of having only 1 device,
the wrong one, with the volser.

Regards,
Richard Schuh



> -----Original Message-----
> From: The IBM z/VM Operating System
> [mailto:ib...@listserv.uark.edu] On Behalf Of August Carideo
> Sent: Wednesday, October 20, 2010 9:44 AM
> To: IBMVM@LISTSERV.UARK.EDU
> Subject: Re: Duplicate VOLSERs at IPL
>
>
>
> and I thought all you need to do was make sure the duplicates
> where at a higher address on the string and it would hit the
> lower ones 1st and advise there was a dupe after reading
> these posts I wonder
>
>
>
>
>
>              Bob Bates
>
>              <robert.ba...@wel
>
>              lsfargo.com>
>           To
>              Sent by: The IBM
> IBMVM@LISTSERV.UARK.EDU
>              z/VM Operating
>           cc
>              System
>
>              <ib...@listserv.u
>      Subject
>              ARK.EDU>                  Re: Duplicate VOLSERs
> at IPL
>
>
>
>
>              10/20/2010 12:38
>
>              PM
>
>
>
>
>
>              Please respond to
>
>                The IBM z/VM
>
>              Operating System
>
>              <ib...@listserv.u
>
>                  ARK.EDU>
>
>
>
>
>
>
>
>
>
> How about putting a 2nd config file on the CF1, something
> like PREMNT CONFIG. The SYSTEM CONFIG has Offline_at_IPL of
> the backup packs, PREMNT has Offline of the new packs. If the
> IPL doesn't work, IPL and use fn=PREMNT on the SAPL.
>
> If everything works as planned the volumes can be brought
> online and relabeled.
>
> Bob Bates
> robert.ba...@wellsfargo.com
> This message may contain confidential and/or privileged
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> Thank you for your cooperation.
>
> From: The IBM z/VM Operating System
> [mailto:ib...@listserv.uark.edu] On Behalf Of George Henke/NYLIC
> Sent: Wednesday, October 20, 2010 10:24 AM
> To: IBMVM@LISTSERV.UARK.EDU
> Subject: Duplicate VOLSERs at IPL
>
>
> I plan to DDRed my system disks 540RES, 540SPL, 540W01,
> 540W02, before I apply maintenance to Level 1 and PUT2PROD,
> so that I have a *hot* fallback when I IPL. the maintenance.
>
> How can I be sure the IPL will not pick up these standby
> disks but WILL pick them up if I need them for fallback?  Is
> just changing the 540RES IPL address enough?
>
>






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