CONTENTS

  Title Page

  Copyright Page

  Preface

  1      FDDI as a VAXcluster Interconnect

  1.1     Basic Configuration Types
    1.1.1      Disaster-Tolerant VAXcluster Systems
    1.1.2      VAXcluster Multi-Datacenter Facility Systems
    1.1.3      FDDI in a Local Area VAXcluster

  2      General Guidelines for FDDI VAXcluster Configurations

  2.1     Network-Related Guidelines

  2.2     Configuring VAXcluster Systems with Multiple LAN Adapters
    2.2.1      Multiple Adapter VAXcluster Systems with Several LAN Segments
    2.2.2      Guidelines to Allow for LAN Bridge Failover
    2.2.3      VAXcluster Network Failure Analysis

  2.3     LRP Parameter Guidelines

  2.4     Transmit Channel Selection

  3      Multi-Datacenter VAXcluster Configurations

  3.1     VAXcluster Multi-Datacenter Facility
    3.1.1      VAXcluster MDF Prerequisite Software
    3.1.2      VAXcluster MDF Prerequisite Hardware
    3.1.3      Quorum VAX System Prerequisite Hardware
    3.1.4      VAXcluster MDF License

  3.2     VAXcluster MDF Operations Management Station

  3.3     Configuration Examples

  3.4     Performance Information

  3.5     Hardware Guidelines
    3.5.1      VAX 8xxx CPUs
    3.5.2      System Disk Guidelines

  3.6     Software Guidelines and Considerations
    3.6.1      Application Considerations
    3.6.2      User Considerations
    3.6.3      Security Considerations
    3.6.4      MSCP Server Guidelines
    3.6.5      Quorum Considerations
    3.6.6       Volume Shadowing Considerations
    3.6.7      RECNXINTERVAL Parameter Guidelines
    3.6.8      System Startup Considerations

  3.7     Increasing Availability

  A   Selecting a LAN-based VAXcluster Configuration

  A.1     Increasing Bandwidth

  A.2     Improving Availability

  Glossary of VAXcluster MDF Terms

  FIGURES

  1-1        MDF Provides Disaster Tolerance

  1-2        Dual-Datacenter VAXcluster

  1-3        Optimal Multi-Datacenter Facility VAXcluster

  2-1        Multiple LAN VAXcluster

  3-1        Multi-Datacenter Facility VAXcluster

  3-2        VAXcluster MDF System with OMS

  3-3        VAXcluster MDF System with a Quorum VAX

  3-4        Dual-Homing Configuration

  3-5        Interconnect Performance Comparison

  3-6        Multiple FDDI Adapters

  3-7        Redundant Concentrators

  3-8        Multiple FDDI Rings

  A-1        Local Area VAXcluster Using Ethernet

  A-2        FDDI in Conjunction with Ethernet in a VAXcluster

  TABLES

  1-1        VAXcluster Interconnect Comparison

  3-1        MDF-affected SYSGEN Parameters

  3-2        MSCP-related SYSGEN Parameters