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IBM Power Systems LC921 and LC922: Technical Overview and Introduction

Author Gustavo Santos , Ritesh Nohria , Volker Haug , Scott Vetter
Release Date: 2019/12/01
ISBN: 9780738457147
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Book Description

This IBM® Redpaper™ publication is a comprehensive guide that covers the IBM Power Systems™ LC921 and LC922 (9006-12P and 9006-22P)) servers that use the current IBM POWER9™ processor-based technology and supports Linux operating systems (OSes). The objective of this paper is to introduce the offerings and their capacities and available features.

These new Linux scale-out systems provide differentiated performance, scalability, and low acquisition cost, and include the following features:


  • Superior throughput and performance for high-value Linux workloads.
  • Low acquisition cost through system optimization (industry-standard memory and industry-standard three-year warranty).
  • Rich I/O options in the system unit. There are 12 large form factor (LFF)/small form factor (SFF) bays for 12 SAS/SATA hard disk drives (HDDs) or solid-state drives (SSDs), and four bays that are available for Non-Volatile Memory Express (NVMe) Gen3 adapters.
  • Includes Trusted Platform Module (TPM) 2.0 Nuvoton NPCT650ABAWX through I2C (for secure boot and trusted boot).
  • Integrated MicroSemi PM8069 SAS/SATA 16-port Internal Storage Controller Peripheral Component Interconnect Express (PCIe) 3.0 x8 with RAID 0, 1, 5, and 10 support (no write cache).
  • Integrated Intel XL710 Quad Port 10 GBase-T PCIe 3.0 x8 UIO built-in local area network (LAN) (one shared management port).
  • Dedicated 1 Gb Intelligent Platform Management Interface (IPMI) port.

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

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

Table of Contents

  1. Front cover
  2. Notices
    1. Trademarks
  3. Preface
    1. Authors
    2. Now you can become a published author, too!
      1. Comments welcome
      2. Stay connected to IBM Redbooks
  4. Chapter 1. Architectural and technical description
    1. 1.1 Power LC921 hardware overview
    2. 1.2 Power LC922 hardware overview
      1. 1.2.1 Minimum features
    3. 1.3 Operating system support
      1. 1.3.1 Ubuntu
      2. 1.3.2 Red Hat Enterprise Linux
    4. 1.4 Operating environment
    5. 1.5 Physical package
    6. 1.6 System architecture
    7. 1.7 The POWER9 processor
      1. 1.7.1 POWER9 processor overview
      2. 1.7.2 Processor features
      3. 1.7.3 Supported technologies
      4. 1.7.4 Simultaneous multithreading
      5. 1.7.5 Processor feature codes
      6. 1.7.6 Coherent Accelerator Processor Interface
    8. 1.8 Memory subsystem
      1. 1.8.1 DIMM placement rules
      2. 1.8.2 Memory bandwidth
    9. 1.9 Internal I/O subsystem
      1. 1.9.1 PCIe Express Controller and PCI Express
      2. 1.9.2 Slot configuration
      3. 1.9.3 PCI adapters
    10. 1.10 Internal storage
      1. 1.10.1 Power LC921 server direct attach drive backplane
      2. 1.10.2 Power LC922 server direct attach drive backplane
      3. 1.10.3 Power LC922 server: LSI drive backplane
      4. 1.10.4 Disk and media features
      5. 1.10.5 Power LC922 optional 2 x SFF rear SAS/SATA drives
    11. 1.11 System ports
    12. 1.12 External I/O subsystems
    13. 1.13 IBM Systems Storage
      1. 1.13.1 IBM Flash Storage
      2. 1.13.2 Software-defined storage
      3. 1.13.3 IBM Hybrid Storage
      4. 1.13.4 IBM Storage Area Networks
  5. Chapter 2. Management and virtualization
    1. 2.1 Main management components overview
    2. 2.2 Service processor
      1. 2.2.1 OpenPOWER Abstraction Layer
      2. 2.2.2 Intelligent Platform Management Interface
      3. 2.2.3 Petitboot bootloader
    3. 2.3 IBM Cloud PowerVC Manager
  6. Chapter 3. Reliability, availability, and serviceability
    1. 3.1 Processor and cache reliability
      1. 3.1.1 L3 cache line delete
      2. 3.1.2 Special Uncorrectable Error handling
      3. 3.1.3 Thermal management and current/voltage monitoring
      4. 3.1.4 PCI extended error handling
      5. 3.1.5 Chassis policy after input power loss and autorestart after system checkstop
    2. 3.2 Serviceability
      1. 3.2.1 Service processor
      2. 3.2.2 Service interface
      3. 3.2.3 Concurrent maintenance
      4. 3.2.4 Error handling and reporting
  7. Appendix A. Server racks and energy management
    1. IBM server racks
    2. IBM 42U SlimRack 7965-94Y
    3. The AC power distribution unit and rack content
    4. Rack-mounting rules
    5. OEM racks
    6. Energy consumption estimation
  8. Related publications
    1. IBM Redbooks
    2. Online resources
    3. Help from IBM
  9. Back cover
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