RE: 820 to 520 Upgrade

The single step approach as documented by IBM (Larry Bolhuis described the
steps) works fine, but the customer should have some REALLY good reasons to
justify going that route over the recommended two step approach.  The
reasons given below in Charles' post should illustrate the wisdom of
keeping it simple!

I used the single step approach once at a hospital I worked at, but had the
luxury of working with a good C.E. who had helped to develop the basic
process and also having full hardware side by side.  I was able to take
sufficient time to work out the kinks by working through the process
several times before doing a final migration.  It worked fine, but there
were definitely some lessons learned in the trial runs!

Keep it simple and by the IBM recommendation if possible would be my
advice.


                                                                           
             "Wilt, Charles"                                               
             <CWilt@xxxxxxxxxx                                             
             om>                                                        To 
             Sent by:                  "Midrange Systems Technical         
             midrange-l-bounce         Discussion"                         
             s@xxxxxxxxxxxx            <midrange-l@xxxxxxxxxxxx>           
                                                                        cc 
                                                                           
             07/20/2005 08:55                                      Subject 
             AM                        RE: 820 to 520 Upgrade              
                                                                           
                                                                           
             Please respond to                                             
             Midrange Systems                                              
                 Technical                                                 
                Discussion                                                 
             <midrange-l@midra                                             
                 nge.com>                                                  
                                                                           
                                                                           




Antonio,

I highly recommend upgrading to v5r3 on the 820 first.

1) IBM recommends it.
2) I think it's easier
3) First Rule of Change management - change one thing at a time.


Regarding #3, lets say you migrate from the 820 @ v5r2 to the 520 @ v5r3
and you have a problem with some production application.  What caused the
problem?  The new hardware or the new OS?

Whereas, if you upgrade the 820 to v5r3 and run w/o problem for a few
weeks.  The migrate to the 520 and have a problem, you at least know that
the problem must be related to the new hardware.


HTH,

Charles Wilt
--
iSeries Systems Administrator / Developer
Mitsubishi Electric Automotive America
ph: 513-573-4343
fax: 513-398-1121


> -----Original Message-----
> From: midrange-l-bounces@xxxxxxxxxxxx
> [mailto:midrange-l-bounces@xxxxxxxxxxxx]On Behalf Of Antonio
> Fernandez-Vicenti
> Sent: Tuesday, July 19, 2005 7:51 PM
> To: Midrange Systems Technical Discussion
> Subject: 820 to 520 Upgrade
>
>
> A customer plans to upgrade from 820 to 520.
> 820 presently runs V5R2.
> The 520 will be a brand new machine, thus running V5R3.
> Some features from the 820 will be moved to the new 520, BUT NO OLD
> DISKS (some 6 and 8GB's) will be moved to the new machine:
> 520 will just
> use its own 35GB disks
>
> They've been told that 820 needs to be upgraded to V5R3 BEFORE
> saving/restoring things from 820 to 520.
>
> I searched the Archives and found several posts more or less in that
> same line, e.g.:
>     "Then and only then when you are on V5R3 can you save the 820 and
> restore it to the 520."
>
> My question is: what's the reason we cannot just save user profiles,
> programs, files, etc fron V5R2 machine and then restore them
> to the new
> V5R3 machine?
>
> TIA
>
> --
> Antonio Fernandez-Vicenti
> afvaiv@xxxxxxxxxxxxxx
>
>
> --
> This is the Midrange Systems Technical Discussion
> (MIDRANGE-L) mailing list
> To post a message email: MIDRANGE-L@xxxxxxxxxxxx
> To subscribe, unsubscribe, or change list options,
> visit: http://lists.midrange.com/mailman/listinfo/midrange-l
> or email: MIDRANGE-L-request@xxxxxxxxxxxx
> Before posting, please take a moment to review the archives
> at http://archive.midrange.com/midrange-l.
>
>

--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list
To post a message email: MIDRANGE-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/midrange-l.


_____________________________________________________________________________

Scanned by IBM Email Security Management Services powered by MessageLabs.
For more information please visit http://www.ers.ibm.com
_____________________________________________________________________________


ForwardSourceID:NT000266AA

_____________________________________________________________________________
Scanned by IBM Email Security Management Services powered by MessageLabs. For 
more information please visit http://www.ers.ibm.com
_____________________________________________________________________________