Two-Step Migration (Lift and Shift followed by DMO)
- This approach requires two downtimes and two testing cycles, and the clone system can we build with a homogeneous system copy or via DBMS replication tools.
- Pipe method as both cloned system and HANA DB is built on Azure cloud.
- There is no manual data transfer resync or re-sync SUM directory required in this method.
- Cost is very high for a two-step lift and shift DMO method when compared to a one-step migration method
Many factors influence the downtime for database migration and the performance optimization can be done in the following three areas:
- File transfer
A two-step migration method requires an additional clone environment in the cloud. Therefore, if the customer cannot add any more hardware on-premises system then this two-step process can be used.
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