IBM Parallel Sysplex design for the IBM z196 system

Overview of IBM zEnterprise 196 I/O subsystem with focus on new PCI Express infrastructure

“…The HCA3-O for 12Â InfiniBand coupling is designed for improved performance for distances up to 150 m. The HCA3-O LR for 1Â InfiniBand coupling has double the port density for unrepeated distances up to 10 km. These new InfiniBand coupling links interoperate with the HCA2-based links [2]. The third new card, the PCIe fan-out and its related components, along with the new PCIe I/O drawer are the subjects of the remainder of this paper.…”