– Shared Memory Communication - Remote Direct Memory Access (SMC-R): GLYPH<129> 25GbE RoCE (RDMA over Converged Ethernet) Express2 GLYPH<129> 10GbE RoCE Express2 GLYPH<129> 10GbE RoCE Express (carry forward only) – Shared Memory Communication - Direct Memory Access (SMC-D) through Internal  Shared Memory (ISM) GLYPH<SM590000> Coupling and Server Time Protocol connectivity: – Internal Coupling (IC) links – Integrated Coupling Adapter Short Reach (ICA SR) –C E  L R – HCA3-O, 12x Parallel SysplexInfiniBand (IFB) coupling links – HCA3-O, 1x Paralle l Sysplex InfiniBand (IFB) coupling links GLYPH<SM590000> Cryptography: – Crypto Express6S – Crypto Express5S (carry forward only) – Regional Crypto Enablement GLYPH<SM590000> IBM zEnterprisefi Data Compre ssion (zEDC) Express features, which are installed in the  PCIe I/O drawers (new build and carry forward). 1.2.5 Reliability, availability, and serviceability design GLYPH<SM590000> Error Prevention GLYPH<SM590000> Error Detection and Correction GLYPH<SM590000> Error Recovery System reliability, availability, and serviceability (RAS) is an area of continuous IBM focus and  a defining IBM Z platform characteristic. The RAS objective is to reduce, or eliminate if  possible, all sources of planned and unplanned outages while providing adequate service  information if an issue occurs. Adequate service information is required to determine the  cause of an issue without the need to reproduce the context of an event. IBM Z servers are designed to enable highest availability and lowest downtime. These facts  are recognized by various IT analysts, such as ITIC$^{11}$ and IDC$^{12}$. Comprehensive,  multi-layered strategy includes the following features: 11 For more information, see ITIC Global Server Hardware, Server OS Reliability Report. 12 For more information, see Quantifying the Business Value of IBM Z. With a properly configured z14 server, further reduction of outages can be attained through  First Failure Data Capture (FFDC), which is designed to reduce service times and avoid  subsequent errors, and improve nondisruptive replace, repair, and upgrade functions for  memory, drawers, and I/O adapters. In addition, z14 servers extended nondisruptive  capability to download and install LIC updates. IBM z14™ RAS features provide unique high-availability and nondisruptive operational  capabilities that differentiate the Z servers in the marketplace. z14 RAS enhancements are  made on many components of the CPC (processor chip, memory subsystem, I/O, and  service) in areas, such as error checking, error protection, failure handling, error checking,  faster repair capabilities, sparing, and cooling. The ability to cluster multiple systems in a Parallel Sysplex takes the commercial strengths of  the z/OS platform to higher levels of system management, scalable growth, and continuous  availability. 10  IBM z14 (3906) Technical Guide