IBM Power System E950 Technical Overview and Introduction

A draft IBM Redpaper publication

Updated 16 August 2018

cover image

ISBN-10: 0738457094
ISBN-13: 9780738457093
IBM Form #: REDP-5509-00

Authors: Scott Vetter, James Cruickshank, Yongsheng Li (Victor), Armin Röll


This IBM® Redpaper™ publication gives a broad understanding of a new architecture of the IBM Power System E950 server that support IBM AIX®, and Linux operating systems. The objective of this paper is to introduce the major innovative Power E950 offerings and relevant functions:

  • The IBM POWER9™ processor, which is available at frequencies of 2.8 - 3.4 GHz.
  • Significantly strengthened cores and larger caches.
  • Supports up to 16 TB memory, which is 4 times more than the POWER8® E850.
  • Integrated I/O subsystem and hot-pluggable Peripheral Component Interconnect® Express (PCIe) Gen4 slots, double the bandwidth of Gen3 I/O slots.
  • Supports EXP12SX, ESP24SX external disk drawers, which has 12 Gb SAS interfaces and supports Active Optical cables for greater distances and less cable bulk.
  • New IBM EnergyScale™ technology offers new variable processor frequency modes that provide a significant performance boost beyond the static nominal frequency.

This publication is for professionals who want to acquire a better understanding of IBM Power Systems™ products. The intended audience includes the following roles:

  • Clients
  • Sales and marketing professionals
  • Technical support professionals
  • IBM Business Partners
  • Independent software vendors (ISVs)

This paper expands the current set of IBM Power Systems documentation by providing a desktop reference that offers a detailed technical description of the Power E950 server.

This paper does not replace the current marketing materials and configuration tools. It is intended as an extra source of information that, together with existing sources, can be used to enhance your knowledge of IBM server solutions.

Table of contents

Chapter 1. General description
Chapter 2. Architecture and technical overview
Chapter 3. Virtualization
Chapter 4. Reliability, availability, serviceability, and manageability

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