S/4 Hana Migration

Large System SAP S/4HANA Migration with Near-Zero Downtime 

The migration of a very large SAP system to SAP S/4HANA represents several unique challenges, not least of which is managing the business disruption and downtime of such a migration. Nordia has a unique migration pattern that migrates systems with minimum downtime. We analyze your existing database to recognize static data which we migrate ahead of the go-live window. Only dynamic data is migrated as part of any agreed downtime window resulting in near-zero downtime. 


Optimized Migration

  • Project planning and determining a deadline date for the migration 
  • Allocating company resources and dedicated time 
  • Evaluating the target architecture to ascertain if it is substantially changing 
  • Assessing if the migration should include an upgrade  
  • Incorporating any corporate strategic Roadmaps for SAP 

SAP S/4HANA Migration Options 

Although experts at SAP and other tech leaders can reel off quite a few ways of handling a switch to SAP 4/HANA, three are more commonly recommended than the others. 

1. Greenfield Approach

One option isn’t really a migration option. Instead, it’s an implementation of S/4HANA from the ground up. 

“Greenfield” is a term adopted from architectural and environmental engineering that means starting fresh on land that has no previous construction. For S/4HANA specifically, it means either migrating data only or no migration at all. You retire legacy customizations and work to streamline processes. 

2. Full Migration

A full migration approach is a complete conversion of an existing SAP system to SAP S/4HANA, a method often referred to as “lift-and-shift.” 

This scenario involves using SAP Software Update Manager with a database migration option for any enterprise not using SAP HANA as their database. To address application customization, enterprises can use SAP cloud and SAP partner development tools.

3. Hybrid Migration

In a hybrid migration, organizations need to analyze the current SAP system and identify the customized applications, functionality, and interfaces that are not part of the core. 

Before the migration, enterprises can use a low-code platform to develop the non-vanilla pieces and applications used by the system. By doing that work in advance, the SAP core is kept clean to make the migration easier. 

Afterwards, your business is using S/4HANA for what SAP does best—enterprise resource planning—and other apps for what it doesn’t do best.