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Refresh - Unique SAP HANA on Power capabilities for Green Computing

By Katharina Probst posted 3 days ago

  
P9 is the only processor architecture supported for SAP HANA workloads using dynamic frequencies for production workload saving energy and cooling cost.

The preference is to use the "Dynamic Performance" mode. It will lower the processor frequency if the entire processor socket is idle for 100s of milliseconds, thus, providing both a performance boost and a power savings when possible. Dynamic Performance mode is great for customers that want deterministic performance across the full range of environmental conditions or those that have acoustic or power consumption concerns.

Alternatively the "Nominal" (constant lower CPU frequency) or "Maximum Performance" can be used for SAP HANA production instances.

SAP Note
2777782 - SAP HANA DB: Recommended OS Settings for RHEL 8
SAP Note
2205917 - SAP HANA DB: Recommended OS settings for SLES 12 / SLES for SAP Applications 12
SAP Note
2684254 - SAP HANA DB: Recommended OS settings for SLES 15 / SLES for SAP Applications 15
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3 days ago

I have been asked on a quantitative statement: the savings will be extremely different based on the workload consolidated on a system and how many LPARs are using the "Dynamic Power" mode.