Hi Robert,

Congratulations on the successful completion of the migration. Could you please share the procedure or approach followed during the migration for our reference?

Robert,

I'm curious how you performed the migrations from server to server (LPAR to LPAR). Were they RISC migrations or just full save/restores because the LPARS were on same IBM i version or (by any chance) did you use DBM Migrate While Active, etc.?

Thanks, Scott

I don't understand the term "RISC migrations".  Are you talking about something like the very first scenario in https://www.ibm.com/docs/en/i/7.6.0?topic=migrations-scenarios-data-migration  ?

If so, that is not what we did.  All LPARs of IBM i were, and still are, on 7.5.  I did a full BRMS save/restore.  Why BRMS?  Because we do all of our saves with BRMS and what better way to test your recovery?  Besides saving/restoring to four drives on the media library at the same time speeds things along.  

The consultant who did the AIX migration did it differently.  For one, AIX is not attached to the media library (a VTL by the way).  He migrated the AIX partition from internal disk hosted by IBMi to our FS7300 SAN.  Then he attached that to the Power 11.

I supposed I could have done IBM i similar to that.  But doing it my way was less expensive in SAN consultant dollars and gave me more save/restore experience.  I've done multiple migrations this way and my comfort level was high.  I follow the report generated by STRRCYBRM OPTION(*SYSTEM) ACTION(*REPORT) PERIOD((*AVAIL *CURRENT)) and where it told me to, a little of IBM i documentation.

From the BRMS recovery report there is a section with:

**************************************************************************
   The following report is to be used in conjunction with the "Recovering 
   your system" topic, SC41-5304, to assist with recovery from failures.  
**************************************************************************
   When recovering the system, refer to the section on "Recovering        
   after a Complete Loss" under chapter "Selecting the Right Recovery     
   Strategy" in the "Recovering your system" topic, and the details shown 
   below to determine which recovery steps should be taken and the media  
   needed for each step.                                                  

Robert,

I'm curious how you performed the migrations from server to server (LPAR to LPAR). Were they RISC migrations or just full save/restores because the LPARS were on same IBM i version or (by any chance) did you use DBM Migrate While Active, etc.?

Thanks, Scott

Yes, the first scenario is the situation I was referring to.  We are an IBM BP but our clients are local governments who do not migrate their servers often.  So right now, I'm doing a lot of 7.3 to 7.5 POWER8 to POWER10 migrations.  The term I used comes from the way the POWER10 was configured with feature code 0205 RISC-to-RISC Data Migration rather than FC 5000  Software Preload Required.  With FC 0205 IBM only loads the LIC and base OS so that you can follow the proper restore procedures and then install the rest of the OS (upgrading the QUSRSYS portion) and the same LPPs that were on the old server.

Thanks for your reply.

Scott

I don't understand the term "RISC migrations".  Are you talking about something like the very first scenario in https://www.ibm.com/docs/en/i/7.6.0?topic=migrations-scenarios-data-migration  ?

If so, that is not what we did.  All LPARs of IBM i were, and still are, on 7.5.  I did a full BRMS save/restore.  Why BRMS?  Because we do all of our saves with BRMS and what better way to test your recovery?  Besides saving/restoring to four drives on the media library at the same time speeds things along.  

The consultant who did the AIX migration did it differently.  For one, AIX is not attached to the media library (a VTL by the way).  He migrated the AIX partition from internal disk hosted by IBMi to our FS7300 SAN.  Then he attached that to the Power 11.

I supposed I could have done IBM i similar to that.  But doing it my way was less expensive in SAN consultant dollars and gave me more save/restore experience.  I've done multiple migrations this way and my comfort level was high.  I follow the report generated by STRRCYBRM OPTION(*SYSTEM) ACTION(*REPORT) PERIOD((*AVAIL *CURRENT)) and where it told me to, a little of IBM i documentation.

From the BRMS recovery report there is a section with:

**************************************************************************
   The following report is to be used in conjunction with the "Recovering 
   your system" topic, SC41-5304, to assist with recovery from failures.  
**************************************************************************
   When recovering the system, refer to the section on "Recovering        
   after a Complete Loss" under chapter "Selecting the Right Recovery     
   Strategy" in the "Recovering your system" topic, and the details shown 
   below to determine which recovery steps should be taken and the media  
   needed for each step.                                                  

Robert,

I'm curious how you performed the migrations from server to server (LPAR to LPAR). Were they RISC migrations or just full save/restores because the LPARS were on same IBM i version or (by any chance) did you use DBM Migrate While Active, etc.?

Thanks, Scott