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Status Not under consideration
Workspace IBM i
Categories BRMS
Created by Guest
Created on Feb 21, 2020

Full system restore enhancement when restoring from both *FULL and *CUML saves.

The last defense in a DR strategy is restoring a whole system from tapes using the recovery report (QP1ARCY) and that is a very time consuming task.

If the backup strategy is done by using *FULL backups, maybe once a week, and *CUML the rest of the days and you end up restoring the whole system from tapes
using the BRMS guided restore (the recovery report QP1ARCY), BRMS is not smart enough to only restore the most recent version of saved objects.

You first need to restore all library and objects saved with the *FULL backup and then restore all changed objects that are saved during the *CUML save.
That means that most objects that are save with a *CUML backup actually needs to be restores twice, first from the *FULL save and then from *CUML save and that can be
several TB of data that needs to be restored twice.

There is also a risk that the format of a file have been changed between the *FULL and *CUML save. The restore of the file from the *CUML save will then fail with the error:
CPF3283 "Saved file or member level ID not same as file xxxxxxx". You will then have to delete the file that exist on the system and then restore the file from the *CUML save again
This also adds extra time to the restore.


BRMS should handle this, either by skipping the objects from the *FULL save that also will be restored from the *CUML save
or
by restoring objects from the *CUML save first and then the objects from the *FULL save with RSTLIB OPTION(*NEW).

The solution should be documented and supported from IBM/Helpsystems and also described in the recovery report (QP1ARCY)


Use Case:

Would reduce a DR restore time significantly and also probably reduce errors during the restore.


Idea priority High
  • Guest
    Aug 17, 2020

    The BRMS team does not intend to provide a solution to this request at this time, so it is being closed. After doing prototype testing, issues were uncovered where file descriptions were back leveled along with the content of some non-database files such as save files being incorrect. With the potential of other unknown risks that we did not uncovered yet, the BRMS team has decided it is not safe to change current restore process at this time.

  • Guest
    Mar 18, 2020

    The CEAC has reviewed this requirement and recommends that IBM view this as a MEDIUM priority requirement that should be addressed.

    Background: The COMMON Europe Advisory Council (CEAC) members have a broad range of experience in working with small and medium-sized IBM i customers. CEAC has a crucial role in working with IBM i development to help assess the value and impact of individual RFEs on the broader IBM i community and has therefore reviewed your RFE.

    To find out how CEAC help to shape the future of IBM i, see CEAC @ ibm.biz/BdYSYj and the article "The Five Hottest IBM i RFEs Of The Quarter" at ibm.biz/BdYSZT

    Therese Eaton – CEAC Program Manager, IBM

  • Guest
    Feb 28, 2020

    The BRMS team will use this request as input to planning but no commitment is made or implied. The request will be updated in the future if the request is implemented. The BRMS team will use votes and comments from others in the community to help prioritize this request