## 3.1 Overview 

The z14 symmetric multiprocessor (SMP) system is the next step in an evolutionary trajectory that began with the introduction of the IBM System/360 in 1964. Over time, the design was adapted to the changing requirements that were dictated by the shift toward new types of applications on which clients depend. 

z14 servers offer high levels of reliability, availability, serviceability (RAS), resilience, and security. It fits into the IBM strategy in which mainframes play a central role in creating an infrastructure for cloud, analytics, and mobile, underpinned by security. The z14 server is designed so that everything around it, such as operating systems, middleware, storage, security, and network technologies that support open standards, helps you achieve your business goals. 

The modular CPC drawer design aims to reduce, or in some cases even eliminate, planned and unplanned outages. The design does so by offering concurrent repair, replace, and upgrade functions for processors, memory, and I/O. For more information about the z14 RAS features, see Chapter 9, “Reliability, avai lability, and serviceability” on page 363. 

z14 servers include the following features: 

GLYPH<SM590000> Ultra-high frequency, large, high-speed buffers (caches) and memory 

GLYPH<SM590000> Superscalar processor design 

GLYPH<SM590000> Out-of-order core execution 

GLYPH<SM590000> Simultaneous multithreading (SMT) 

GLYPH<SM590000> Single-instruction multiple-data (SIMD) 

GLYPH<SM590000> Flexible configuration options 

It is the next implementation of IBM Z servers to address the ever-changing IT environment. 

## 3.2 Design highlights 

The physical packaging of z14 servers is a continuation and evolution of the z13 systems. Its modular CPC drawer and single chip module (SCM) design address the augmenting costs that are related to building systems with ever-increasing capacities. The modular CPC drawer design is flexible and expandable, offering unprecedented capacity to meet consolidation needs, and might contain even larger capacities in the future. 

z14 servers continue the line of mainframe processors that are compatible with an earlier version. Evolutionfi brings the following processor design enhancements: 

GLYPH<SM590000> A total of 10 cores per CP chip 

GLYPH<SM590000> Pipeline optimization 

GLYPH<SM590000> Improved SMT and SIMD 

GLYPH<SM590000> Better branch prediction 

GLYPH<SM590000> Improved co-processor functionality 

It uses 24-bit, 31-bit, and 64-bit addressing modes, multiple arithmetic formats, and multiple address spaces for robust interprocess security. 

The z14 system design has the following main objectives: 

GLYPH<SM590000> Offer a data-centric approach to information (data) security that is simple, transparent, and consumable (extensive data encryption from inception to archive, in flight and at rest). 

