Re: 730 to 825 migration -- MIDRANGE-L

Doug,

I and one of my staff recently did a 730 to 825 migration for a customer from V5R1 to V5R2. We have also done V4R5 to V5R2 albeit on smaller systems. As others have stated there is additional work involved *BUT* a VERY Large amount of work is taken off the critical path. Consider all the time needed to upgrade the 730 to V5R2 including a 'significant number' of PTF plus backups fore and aft. Bet you're not doing that on Tuesday morning. Consider testing of all applications on V5R2 including customer apps and tools that may need upgrading/replacing during the upgrade. Again, not done while the sun is shining. Consider any calls to the vendors where issues may be discovered, by now you hate the coffee pot and the Mt. Dew is gone and the vendor is paging the 'on call' person for that weekend. And you're still on the 730! Tapes aren't even fun to watch any longer and that's still to come. Also consider that most 725 to 825 upgrades are brining very nearly *ZERO hardware across with the possible exception of tape so you're likely to have two full systems (or at least close) anyway.

Grossly over simplified my plan is: SAVE 23 on source system. (This step is off hours) Restore to target system. Test, test, test. Don't worry, be happy. Test some more, call vendors if you must but be comfortable with the target system. All of this is done during normal working hours! Then for final cut, do another Save 23 or a custom data only save and then restore that to the target box. Some may need to re-do user profiles to catch changed passwords but over all MUCH less time is spent 'in the wee hours' and clearer heads prevail. Sure there are tips and 'tricks' and utilities we've developed to help but hey, I make money doing this stuff!! :-)

We're 3 for 3 in the last two months with smiling customers.

My .02

- Larry

Doug Hart wrote:

I am planning to migrate from a 730 at v4r5 to a new 825 partition at v5r2.
My client does not want his 730 to be upgraded to v5r2 as he is concerned
with having problems in v5r2.  He is requesting that I NOT do a "by the
book" migration where the source system is upgraded then the target
partition loaded from scratch from the save of the source system. I have
done two of these "user data" migrations before but both were very small
systems (600, 170).  I know the issues with QGPL, QUSRSYS, QDLS, IFS, etc.

Two requests.

I would like to hear from all of you if going from v4r5 to v5r2 has given
anyone problem.  Are the clients fears founded?

Please comment on the non-conventional migration.  Is this a reasonable
request?