1.1 Power IC922 hardware overview1.1.1 Minimum features1.1.2 Supported configurable features1.2 Operating system support1.2.1 Red Hat Enterprise Linux1.3 Operating environment1.4 Physical package1.5 System architecture1.6 The POWER9 processor1.6.1 POWER9 processor overview1.6.2 Processor features1.6.3 Supported technologies1.6.4 Simultaneous multithreading1.6.5 Processor feature codes1.6.6 Coherent Accelerator Processor Interface 2.01.6.7 OpenCAPI 3.01.7 Memory subsystem1.7.1 DIMM placement rules1.7.2 Memory bandwidth1.8 The Trusted Platform Module1.9 Internal I/O subsystem1.9.1 PCIe Express Controller and Peripheral Component Interconnect Express1.9.2 Slot configuration1.9.3 GPUs1.9.4 Field-Programmable Gate Array1.9.5 PCI adapters1.10 .Internal storage1.10.1 Drive backplanes1.10.2 HDDs and SSDs1.10.3 NVM Express1.11 System ports1.12 External I/O subsystems1.13 IBM Systems Storage1.13.1 IBM Flash Storage1.13.2 Software-defined storage1.13.3 IBM Hybrid Storage1.13.4 IBM storage area network