Re: 820 to 520 Upgrade

[Larry Bolhuis <lbolhuis@xxxxxxxxxx>]

Antonio,

You can do what you want if you do things in the correct order and 
order your i5-520 as a side-by-side upgrade.  This process is too long 
to detail here completely but is documented in the backup and recovery 
guide.  I use this process routinely for customer upgrades and have been 
100% successful. I have gone from V5R2, V5R1 and even V4R5 (though that 
one isn't supported) to V5R3 in this manner.  THE KEY to success is 
starting out with just base OS/400 on the 520. GO LICPGM option 10 
*MUST* Show QGPL and QUSRSYS as *BACKLEVEL or you will leave land mines 
for future troubleshooting pleasure.

 - Larry

Antonio Fernandez-Vicenti wrote:

> 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