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HP OpenVMS Systems Documentation
Content starts here Guidelines for OpenVMS Cluster Configurations

Guidelines for OpenVMS Cluster Configurations
Begin Index
Contents (summary)
Preface Preface
Chapter 1 Overview of OpenVMS Cluster System Configuration
Chapter 2 Determining Business and Application Requirements
Chapter 3 Choosing OpenVMS Cluster Systems
Chapter 4 Choosing OpenVMS Cluster Interconnects
Chapter 5 Choosing OpenVMS Cluster Storage Subsystems
Chapter 6 Configuring Multiple Paths to SCSI and Fibre Channel Storage
Chapter 7 Configuring Fibre Channel as an OpenVMS Cluster Storage Interconnect
Chapter 8 Configuring OpenVMS Clusters for Availability
Chapter 9 Configuring OpenVMS Clusters for Scalability
Chapter 10 OpenVMS Cluster System Management Strategies
Appendix A SCSI as an OpenVMS Cluster Interconnect
Appendix B MEMORY CHANNEL Technical Summary
Appendix C Multiple-Site OpenVMS Clusters
  Index
  Figures
  Examples
  Tables

Contents

Preface
Preface Preface
Chapter 1
1 Overview of OpenVMS Cluster System Configuration
     1.1     OpenVMS Cluster Configurations
     1.2     Hardware Components
     1.3     Software Components
         1.3.1         OpenVMS Operating System Components
         1.3.2         Networking Components
         1.3.3         Storage Enhancement Software
         1.3.4         System Management Software
     1.4     Configuring an OpenVMS Cluster System
         1.4.1         General Configuration Rules
Chapter 2
2 Determining Business and Application Requirements
     2.1     Determining Business Requirements
         2.1.1         Budget
         2.1.2         Availability
         2.1.3         Scalability and Future Growth
         2.1.4         Physical Location Requirements
         2.1.5         Security
     2.2     Determining Application Requirements
         2.2.1         Adding Memory
         2.2.2         Balancing Processor, Memory, and I/O Resources
         2.2.3         System Management Tools and Utilities
Chapter 3
3 Choosing OpenVMS Cluster Systems
     3.1     Integrity servers and Alpha Systems
     3.2     Types of Systems
     3.3     Choosing Systems
     3.4     Availability Considerations
     3.5     System Specifications
Chapter 4
4 Choosing OpenVMS Cluster Interconnects
     4.1     Characteristics
     4.2     Comparison of Interconnect Types
     4.3     Multiple Interconnects
     4.4     Mixed Interconnects
     4.5     Interconnect Support
     4.6     Fibre Channel Interconnect
         4.6.1         Advantages
         4.6.2         Throughput
     4.7     MEMORY CHANNEL Interconnect (Alpha Only)
         4.7.1         Advantages
         4.7.2         Throughput
         4.7.3         Supported Adapter
     4.8     SCSI Interconnect
         4.8.1         OpenVMS Alpha Configurations
         4.8.2         OpenVMS Integrity servers Two-Node Shared SCSI Configuration
         4.8.3         Advantages
         4.8.4         Throughput
         4.8.5         SCSI Interconnect Distances
         4.8.6         Supported Adapters, Bus Types, and Computers
     4.9     SAS Interconnect (Integrity servers Only)
         4.9.1         Advantages
         4.9.2         Throughput
         4.9.3         Supported Adapters, Bus Types, and Computers
     4.10     LAN Interconnects
         4.10.1         Multiple LAN Adapters
             4.10.1.1             Multiple LAN Path Load Distribution
             4.10.1.2             Increased LAN Path Availability
         4.10.2         Configuration Guidelines for LAN-Based Clusters
         4.10.3         Ethernet (10/100) and Gigabit (1/10) Ethernet Advantages
         4.10.4         Ethernet (10/100) and Gigabit (1/10) Ethernet Throughput
         4.10.5         Configuration Guidelines for 10 Gigabit Ethernet Clusters
     4.11     Cluster over IP
         4.11.1         Configuration Guidelines
         4.11.2         IP Availability
         4.11.3         IP Advantages
         4.11.4         IP Performance
Chapter 5
5 Choosing OpenVMS Cluster Storage Subsystems
     5.1     Understanding Storage Product Choices
         5.1.1         Criteria for Choosing Devices
         5.1.2         How Interconnects Affect Storage Choices
         5.1.3         How Floor Space Affects Storage Choices
     5.2     Determining Storage Capacity Requirements
         5.2.1         Estimating Disk Capacity Requirements
         5.2.2         Additional Disk Capacity Requirements
     5.3     Choosing Disk Performance Optimizers
         5.3.1         Performance Optimizers
     5.4     Determining Disk Availability Requirements
         5.4.1         Availability Requirements
         5.4.2         Device and Data Availability Optimizers
     5.5     SAS Based Storage
         5.5.1         Storage Devices
     5.6     SCSI-Based Storage
         5.6.1         Supported Devices
     5.7     Fibre Channel Based Storage
         5.7.1         Storage Devices
     5.8     Host-Based Storage
         5.8.1         Internal Buses
         5.8.2         Local Adapters
Chapter 6
6 Configuring Multiple Paths to SCSI and Fibre Channel Storage
     6.1     Overview of Multipath SCSI Support
         6.1.1         Direct SCSI to Direct SCSI Failover
         6.1.2         Direct SCS to MSCP Served Failover (Disks Only)
         6.1.3         Configurations Combining Both Types of Multipath Failover
     6.2     Configuration Requirements and Restrictions
     6.3     HSx Failover Modes
         6.3.1         Transparent Failover Mode
         6.3.2         Multibus Failover Mode (Disks Only)
         6.3.3         Port Addressing for Controllers in Multibus Mode
     6.4     Parallel SCSI Multipath Configurations (Disks Only)
         6.4.1         Transparent Failover
         6.4.2         Multibus Failover and Multiple Paths
         6.4.3         Configurations Using Multiported Storage Controllers
     6.5     Disk Device Naming for Parallel SCSI Multipath Configurations
         6.5.1         Review of Node Allocation Classes
         6.5.2         Review of Port Allocation Classes
         6.5.3         Device Naming Using HSZ Allocation Classes
     6.6     Fibre Channel Multipath Configurations
     6.7     Implementing Multipath Configurations
         6.7.1         Valid Multipath Configurations
         6.7.2         Invalid Multipath Configuration
         6.7.3         Multipath System Parameters
         6.7.4         Path Identifiers
         6.7.5         Displaying Paths
             6.7.5.1             Displaying Paths With SHOW DEVICE/FULL
             6.7.5.2             Displaying Paths With SHOW DEVICE/MULTIPATH_SET
         6.7.6         Path Polling
         6.7.7         Switching Current Paths Manually
         6.7.8         Path Selection by OpenVMS
         6.7.9         How OpenVMS Performs Multipath Failover
         6.7.10         Automatic Failback to a Direct Path (Disks Only)
         6.7.11         Enabling or Disabling Paths as Path Switch Candidates
         6.7.12         Performance Considerations
         6.7.13         Console Considerations

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