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HP OpenVMS Systems Documentation
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Guidelines for OpenVMS Cluster Configurations
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Chapter 8
8 Configuring OpenVMS Clusters for Availability
     8.1     Availability Requirements
     8.2     How OpenVMS Clusters Provide Availability
         8.2.1         Shared Access to Storage
         8.2.2         Component Redundancy
         8.2.3         Failover Mechanisms
         8.2.4         Related Software Products
     8.3     Strategies for Configuring Highly Available OpenVMS Clusters
         8.3.1         Availability Strategies
     8.4     Strategies for Maintaining Highly Available OpenVMS Clusters
         8.4.1         Strategies for Maintaining Availability
     8.5     Availability in a LAN OpenVMS Cluster
         8.5.1         Components
         8.5.2         Advantages
         8.5.3         Disadvantages
         8.5.4         Key Availability Strategies
     8.6     Configuring Multiple LANs
         8.6.1         Selecting MOP Servers
         8.6.2         Configuring Two LAN Segments
         8.6.3         Configuring Three LAN Segments
     8.7     Availability in a DSSI OpenVMS Cluster
         8.7.1         Components
         8.7.2         Advantages
         8.7.3         Disadvantages
         8.7.4         Key Availability Strategies
     8.8     Availability in a CI OpenVMS Cluster
         8.8.1         Components
         8.8.2         Advantages
         8.8.3         Disadvantages
         8.8.4         Key Availability Strategies
     8.9     Availability in a MEMORY CHANNEL OpenVMS Cluster
         8.9.1         Components
         8.9.2         Advantages
         8.9.3         Disadvantages
         8.9.4         Key Availability Strategies
     8.10     Availability in an OpenVMS Cluster with Satellites
         8.10.1         Components
         8.10.2         Advantages
         8.10.3         Disadvantages
         8.10.4         Key Availability Strategies
     8.11     Multiple-Site OpenVMS Cluster System
         8.11.1         Components
         8.11.2         Advantages
     8.12     Disaster-Tolerant OpenVMS Cluster Configurations
Chapter 9
9 Configuring CI OpenVMS Clusters for Availability and Performance
     9.1     CI Components
     9.2     Configuration Assumptions
     9.3     Configuration 1
         9.3.1         Components
         9.3.2         Advantages
         9.3.3         Disadvantages
         9.3.4         Key Availability and Performance Strategies
     9.4     Configuration 2
         9.4.1         Components
         9.4.2         Advantages
         9.4.3         Disadvantages
         9.4.4         Key Availability and Performance Strategies
     9.5     Configuration 3
         9.5.1         Components
         9.5.2         Advantages
         9.5.3         Disadvantages
         9.5.4         Key Availability and Performance Strategies
     9.6     Configuration 4
         9.6.1         Components
         9.6.2         Advantages
         9.6.3         Disadvantages
         9.6.4         Key Availability and Performance Strategies
     9.7     Summary
Chapter 10
10 Configuring OpenVMS Clusters for Scalability
     10.1     What Is Scalability?
         10.1.1         Scalable Dimensions
     10.2     Strategies for Configuring a Highly Scalable OpenVMS Cluster
         10.2.1         Scalability Strategies
     10.3     Scalability in CI OpenVMS Clusters
         10.3.1         Two-Node CI OpenVMS Cluster
         10.3.2         Three-Node CI OpenVMS Cluster
         10.3.3         Seven-Node CI OpenVMS Cluster
         10.3.4         Guidelines for CI OpenVMS Clusters
         10.3.5         Guidelines for Volume Shadowing in CI OpenVMS Clusters
     10.4     Scalability in DSSI OpenVMS Clusters
         10.4.1         Two-Node DSSI OpenVMS Cluster
         10.4.2         Four-Node DSSI OpenVMS Cluster with Shared Access
         10.4.3         Four-Node DSSI OpenVMS Cluster with Some Nonshared Access
     10.5     Scalability in MEMORY CHANNEL OpenVMS Clusters
         10.5.1         Two-Node MEMORY CHANNEL Cluster
         10.5.2         Three-Node MEMORY CHANNEL Cluster
         10.5.3         Four-Node MEMORY CHANNEL OpenVMS Cluster
     10.6     Scalability in SCSI OpenVMS Clusters
         10.6.1         Two-Node Fast-Wide SCSI Cluster
         10.6.2         Two-Node Fast-Wide SCSI Cluster with HSZ Storage
         10.6.3         Three-Node Fast-Wide SCSI Cluster
         10.6.4         Four-Node Ultra SCSI Hub Configuration
     10.7     Scalability in OpenVMS Clusters with Satellites
         10.7.1         Six-Satellite OpenVMS Cluster
         10.7.2         Six-Satellite OpenVMS Cluster with Two Boot Nodes
         10.7.3         Twelve-Satellite LAN OpenVMS Cluster with Two LAN Segments
         10.7.4         Forty-Five Satellite OpenVMS Cluster with FDDI Ring
         10.7.5         High-Powered Workstation OpenVMS Cluster
         10.7.6         Guidelines for OpenVMS Clusters with Satellites
         10.7.7         Extended LAN Configuration Guidelines
         10.7.8         System Parameters for OpenVMS Clusters
     10.8     Scaling for I/Os
         10.8.1         MSCP Served Access to Storage
         10.8.2         Disk Technologies
         10.8.3         Read/Write Ratio
         10.8.4         I/O Size
         10.8.5         Caches
         10.8.6         Managing "Hot" Files
         10.8.7         Volume Shadowing

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