RE: 820 to 520 Upgrade

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
> 
> 
> -- 
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