Draft Document for Review September 23, 2019 1:36 am 8860ch02.fm 2.8.6 Defining Network Open Systems Adapter (OSA) Shared Memory Communications - RDMA This section provides planning considerations for deploying the network-related features: GLYPH<SM590000> OSA features GLYPH<SM590000> Shared Memory Communications (SMC-R and SMC-D) features: – SMC - RDMA over Converged Ethernet (RoCE) Express features (SMC-R) – SMC - Direct Memory Access over Internal Shared Memory (SMC-D) GLYPH<SM590000> HiperSockets GLYPH<SM590000> Copper-based Ethernet (1000 Mbps) GLYPH<SM590000> Fiber-based Gigabit Ethernet (GbE), Short Wave (SX), and Long Wave (LX)  GLYPH<SM590000> Fiber-based 10-Gigabit Ethernet Short Reach (SR) and Long Reach (LR) The OSA Express features are installed in an IBM z15 server PCIe+ I/O drawer. The features  are available as different types and support several networking protocols. Depending on the  types of OSAs installed in the z15, the CPC supports attachment with the following  characteristics: Based on the intended use, the operating modes must be defined with channel type and  device address. For configuration details, see  Chapter 6, “Configuring network features”  on page 129  and the  OSA-Express Implementation Guide , SG24-5948. Starting with Driver Level 22 (HMC 2.13.0), HMC has been enhanced to take advantage of  the Open Systems Adapter/Support Facility (OSA/SF) function for the OSA-Express6S,  OSA-Express5S, and OSA-Express4S features. Either OSA/SF on the HMC or the OSA/SF  in the operating system component can be used for the OSA-Express4S features. For the  OSA-Express7S, OSA-Express6S and OSA-Express5S features, OSA/SF on the HMC is  required. The OSA/SF is used primarily for these purposes: See 6.3, “Customizing OSA-Express using OSA Ad vanced facilities” on  page 133 for details  about the use of OSA/SF on the HMC. Note:  OSA-Express6S 1000Base-T adapter (FC 0426) is the last generation of OSA  1000Base-T adapters to support connections operating at 100Mbps link speed.  OSA-Express7S 1000Base-T (FC 0466) supports only 1000Mbps duplex link speed only. The 10GbE RoCE Express (FC #0411), the 10GbE RoCE Express2 (FC #0412), the 10GbE  RoCE Express2.1 (FC #0432), the 25GbE RoCE Express2 (FC 0430) and the 25GbE RoCE  Express2.1 (FC 0450) features are designed to help reduce CPU consumption for  applications that use the TCP/IP stack without requiring application changes. Using the RoCE  GLYPH<SM590000> Manage all OSA ports. GLYPH<SM590000> Configure all OSA non-QDIO ports. GLYPH<SM590000> Configure local MAC addresses. GLYPH<SM590000> Display registered IPv4 addresses (in use and not in use). It is supported on IBM Z  platform for QDIO ports. GLYPH<SM590000> Display registered IPv4 or IPv6 Virtual MAC and VLAN ID associated with all OSA  Ethernet features configured as QDIO Layer 2. GLYPH<SM590000> Provide status information about an OSA port and its shared or exclusive use state. Chapter 2. Planning considerations for CPC in PR/SM mode  23