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How to access data in NLS SAND / SAP IQ post DSO / Info cube migration to aDSO


We are currently using SAP BW 7.01 and use NLS SAND to archive data in DSO and Infocubes

We are planning upgrade to SAP BW 7.5 SP5 powered by SAP HANA with possibility of moving to BW4HANA wherein we have to convert our DSO / Infocubes to aDSO. I suppose technical names of aDSO will be different then existing DSO / Infocubes.

1) Do you know what happens to the data that is already archived to NLS and how can it be accessed via SAP BW 7.5 on HANA / BW 4/HANA. We do not want to loose this data or afford to bring this data back from NLS over to DSO / Info cubes

2) How can this data be retrieved for reporting via BEx or we need to use SDA and how

3) Will DAP on existing DSO / Cube still be there, as I was reading in one of FAQ's that if DAP is deleted, data in NLS is also deleted (atleast for SAP IQ)

All documents that I'm reading only talks about archiving data before upgrading to SAP HANA or suggest that cold data can be archived to SAP IQ from aDSO, but could not find any document which talks about what happens to existing archived data.



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