Front cover IBM Power System S822 Technical Overview and Introduction Outstanding performance based on POWER8 processor technology 2U scale-out rack-mount server Improved reliability, availability, and serviceability features Alexandre Bicas Caldeira Bartłomiej Grabowski Volker Haug Marc-Eric Kahle Andrew Laidlaw Cesar Diniz Maciel Monica Sanchez Seulgi Yoppy Sung ibm.com/redbooks Redpaper International Technical Support Organization IBM Power System S822: Technical Overview and Introduction August 2014 REDP-5102-00 Note: Before using this information and the product it supports, read the information in “Notices” on page vii. First Edition (August 2014) This edition applies to the IBM Power System S822 (8284-22A) server. © Copyright International Business Machines Corporation 2014. All rights reserved. Note to U.S. Government Users Restricted Rights -- Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Notices . vii Trademarks . viii Preface . ix Authors. ix Now you can become a published author, too! . xi Comments welcome. xi Stay connected to IBM Redbooks . xii Chapter 1. General description . 1 1.1 Systems overview . 2 1.1.1 Power S822 server . 2 1.2 Operating environment . 3 1.3 Physical package . 4 1.4 System features . 4 1.4.1 Power S822 system features . 5 1.4.2 Minimum features . 6 1.4.3 Power supply features . 6 1.4.4 Processor module features . 6 1.4.5 Memory features . 7 1.4.6 PCIe slots . 8 1.5 Disk and media features . 8 1.6 I/O drawers for Power S822 . 11 1.6.1 PCIe Gen3 I/O expansion drawer . 11 1.6.2 I/O drawers and usable PCI slot . 13 1.6.3 EXP24S SFF Gen2-bay drawer . 14 1.7 Server and virtualization management . 15 1.8 System racks. 16 1.8.1 IBM 7014 Model T00 rack. 16 1.8.2 IBM 7014 Model T42 rack. 17 1.8.3 IBM 42U Slim Rack Model 7965-94Y . 19 1.8.4 Feature code #0551 rack . 19 1.8.5 Feature code #0553 rack . 19 1.8.6 Feature code #ER05 rack . 19 1.8.7 The AC power distribution unit and rack content . 20 1.8.8 Rack-mounting rules . 22 1.8.9 Useful rack additions. 22 1.8.10 OEM rack . 25 Chapter 2. Architecture and technical overview . 27 2.1 The IBM POWER8 processor . 29 2.1.1 POWER8 processor overview. 30 2.1.2 POWER8 processor core . 33 2.1.3 Simultaneous multithreading. 34 2.1.4 Memory access. 34 2.1.5 On-chip L3 cache innovation and Intelligent Cache . 35 2.1.6 L4 cache and memory buffer . 36 2.1.7 Hardware transactional memory . 37 2.1.8 Coherent Accelerator Processor Interface . 38 © Copyright IBM Corp. 2014. All rights reserved. iii 2.1.9 Power management and system performance . 39 2.1.10 Comparison of the POWER8, POWER7+, and POWER7 processors . 40 2.2 Memory subsystem . 41 2.2.1 Custom DIMMs . 41 2.2.2 Memory placement rules. 42 2.2.3 Memory bandwidth . 44 2.3 System bus . 45 2.4 Internal I/O subsystem . 47 2.4.1 Slot configuration . 47 2.4.2 System ports . 49 2.5 PCI adapters . 50 2.5.1 PCI Express . 50 2.5.2 LAN adapters . 51 2.5.3 Graphics accelerator adapters . 52 2.5.4 SAS adapters . 52 2.5.5 Fibre Channel adapters . 53 2.5.6 Fibre Channel over Ethernet. 54 2.5.7 InfiniBand Host Channel adapter . 55 2.5.8 Asynchronous and USB adapters. 56 2.5.9 Cryptographic coprocessor . 56 2.5.10 FPGA adapters . 56 2.5.11 CAPI adapters. 57 2.5.12 Flash storage adapters . ..