IBM has published recently IBM Hybrid Cloud Reference Architectures!

General – all IBM Hybrid Cloud Architectures

https://www.ibm.com/architectures/hybrid

IBM Hybrid Cloud PowerVS for SAP HANA architecture

https://cloud.ibm.com/media/docs/pdf/deployable-reference-architectures/terraform-ibm-powervs-sap/sap-ready-to-go/deploy-arch-ibm-pvs-sap-ready-to-go.pdf

or on IBM BOX HoP4Public: 
General – all collected HoP information

https://ibm.box.com/v/HANAonPOWERPublicInfoFolder

IBM Hybrid Cloud PowerVS for SAP HANA architecture

https://ibm.box.com/v/HybridCloudHoPPowerVSRefArch