Hello,
you should sync the residence times between ECC and BW. Using Nearline still gives you the option to report on the data, while archiving requires you to reload the data.
But since there is no tight synchronization you should take a longer residence time into consideration if you archive the data in BW.
Depending on the motivation for archiving in BW, I would recommend:
- reduce the online Size --> use the Near Line Store with a shorter residence time and report from the DB as well as the NLS
- delete the data in BW -> use a secure residence ( allowing the process to complete in ERP) and then archive the data
Best Regards
Stefan