Migration to S/4HANA from R/3
For moving from an existing relational database, the standard procedure is the Database Migration Option (DMO). The DMO has the following benefits:
- Manual effort and error-prone processes reduced
- Lower prerequisites for SAP and DB start releases
- Only intermediate fallback effort, as original database could be reactivated
- Downtime optimized
- Only one downtime phase
Migration to S/4HANA includes an option that combines the upgrade with the database migration option (DMO). The result is a one-step migration procedure, compared to the classical migration (i.e. heterogeneous system copy, using Software Provisioning Manager). The DMO is an inplace-migration (instead of a new installation): it upgrades and migrates the existing system while keeping the system-ID, host name, and connectivity settings stable.