What are the supported limits for CPU and RAM on IBM Power System E980 (9080-M9S) running Red Hat Enterprise Linux 8?

Solution Verified - Updated -


  • At the time IBM submitted its certification request for the IBM Power System E980 (9080-M9S), the Red Hat Enterprise Linux 8 (RHEL 8) supported limits for ppc64le-based systems were 768 logical CPUs and 32TB of memory, as stated here: Red Hat Enterprise Linux technology capabilities and limits.
    As the IBM system can be configured with memory and processor amounts in excess of the supported RHEL 8 limits, it was subjected to extended testing beyond the normal hardware certification tests to achieve certification with configurations that exceed the supported limits.


  • Red Hat Enterprise Linux for Power, little endian
  • IBM Power System E980 (9080-M9S) system with 4 48-core Power 9 Processors with SMT8 in configurations up to 1536 logical CPUs and up to 64TB of memory.

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