Now really large OLTP S/4HANA implementations are supported:
On Prem - up to 128 TB (Scale-Out 4 nodes with each 32 TB)
Power Virtual Server - up to 4 nodes with 30.5 TB each.
For further details please have a look into
SAP Note 2188482 - SAP HANA on IBM Power Systems: Supported hardware and features
https://me.sap.com/notes/2188482Released On: 02.12.2024