| Chapter 6 |
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6
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Configuring Multiple Paths to SCSI and Fibre Channel Storage
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6.1
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Overview of Multipath SCSI Support
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6.1.1
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Direct SCSI to Direct SCSI Failover
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6.1.2
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Direct SCSI to MSCP Served Failover (Disks Only)
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6.1.3
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Configurations Combining Both Types of Multipath Failover
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6.2
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Configuration Requirements and Restrictions
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6.3
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HSx Failover Modes
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6.3.1
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Transparent Failover Mode
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6.3.2
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Multibus Failover Mode (Disks Only)
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6.3.3
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Port Addressing for Controllers in Multibus Mode
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6.4
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Parallel SCSI Multipath Configurations (Disks Only)
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6.4.1
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Transparent Failover
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6.4.2
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Multibus Failover and Multiple Paths
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6.4.3
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Configurations Using Multiported Storage Controllers
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6.5
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Disk Device Naming for Parallel SCSI Multipath Configurations
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6.5.1
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Review of Node Allocation Classes
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6.5.2
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Review of Port Allocation Classes
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6.5.3
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Device Naming Using HSZ Allocation Classes
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6.6
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Fibre Channel Multipath Configurations
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6.7
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Implementing Multipath Configurations
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6.7.1
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Valid Multipath Configurations
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6.7.2
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Invalid Multipath Configuration
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6.7.3
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Multipath System Parameters
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6.7.4
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Path Identifiers
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6.7.5
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Displaying Paths
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6.7.5.1
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Displaying Paths With SHOW DEVICE/FULL
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6.7.5.2
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Displaying Paths With SHOW DEVICE/MULTIPATH_SET
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6.7.6
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Path Polling
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6.7.7
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Switching Current Paths Manually
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6.7.8
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Path Selection by OpenVMS
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6.7.9
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How OpenVMS Performs Multipath Failover
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6.7.10
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Automatic Failback to a Direct Path (Disks Only)
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6.7.11
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Enabling or Disabling Paths as Path Switch Candidates
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6.7.12
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Performance Considerations
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6.7.13
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Console Considerations
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| Chapter 7 |
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7
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Configuring Fibre Channel as an OpenVMS Cluster Storage Interconnect
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7.1
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Overview of OpenVMS Fibre Channel Support
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7.2
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Fibre Channel Configuration Support
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7.2.1
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Fibre Channel Remedial Kits
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7.2.2
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Mixed-Version and Mixed-Architecture Cluster Support
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7.2.3
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Fibre Channel and OpenVMS Galaxy Configurations
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7.3
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Example Configurations
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7.3.1
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Single Host with Dual-Ported Storage
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7.3.2
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Multiple Hosts With One Dual-Ported Storage Controller
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7.3.3
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Multiple Hosts With Storage Controller Redundancy
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7.3.4
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Multiple Hosts With Multiple Independent Switches
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7.3.5
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Multiple Hosts With Dual Fabrics
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7.3.6
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Multiple Hosts With Larger Fabrics
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7.4
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Fibre Channel Addresses, WWIDs, and Device Names
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7.4.1
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Fibre Channel Addresses and WWIDs
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7.4.2
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OpenVMS Names for Fibre Channel Devices
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7.4.2.1
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Fibre Channel Storage Adapter Names
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7.4.2.2
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Fibre Channel Path Names
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7.4.2.3
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Fibre Channel Disk Device Identification
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7.5
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Fibre Channel Tape Support
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7.5.1
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Minimum Hardware Configuration
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7.5.2
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Overview of Fibre Channel Tape Device Naming
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7.5.2.1
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Tape and Medium Changer Device Names
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7.5.2.2
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Use of Worldwide Identifiers (WWIDs)
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7.5.2.3
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File-Based Device Naming
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7.5.3
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Management Support for Fibre Channel Tape Devices
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7.5.4
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Configuring a Fibre Channel Tape Device
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7.5.4.1
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Basic Configuration Steps: Summary
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7.5.4.2
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Basic Configuration Steps: Details
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7.5.4.3
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Creating User-Specified Device Names
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7.5.5
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Changing the Name of an Existing Fibre Channel Tape Device
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7.5.6
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Moving a Physical Tape Device on Fibre Channel
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7.5.7
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Swapping Out an NSR on Fibre Channel
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7.5.8
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Serving a Fibre Channel Tape Device
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7.5.9
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Replacing a Fibre Channel Tape Device
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7.5.10
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Determining the Physical Location of a Fibre Channel Tape Device
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7.5.11
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Accessing a Fibre Channel Tape Device in a Standalone Environment
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7.5.12
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Using an NSR or MDR With Dual FC Ports Prior to Version 7.3-1
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7.5.13
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Multipath Tape Support
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7.6
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Using the AlphaServer Console for Configuring FC (Alpha Only)
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7.6.1
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Viewing the FC Configuration from the Console
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7.6.2
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Setting Up FC Disks for Booting and Dumping
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7.7
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Booting on a Fibre Channel Storage Device on OpenVMS I64 Systems
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7.7.1
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Installing the Bootable Firmware
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7.7.2
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Checking the Firmware Version
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7.7.3
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Configuring the Boot Device Paths on the FC
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7.8
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Setting Up a Storage Controller for Use with OpenVMS
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7.8.1
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Setting Up the Device Identifier for the CCL
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7.8.2
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Setting Up the Device Identifier for Disk Devices
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7.9
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Creating a Cluster with a Shared FC System Disk
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7.9.1
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Configuring Additional Cluster Nodes to Boot with a Shared FC Disk (I64 Only)
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7.9.2
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Online Reconfiguration
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7.9.3
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HSG Host Connection Table and Devices Not Configured
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7.10
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Using Interrupt Coalescing for I/O Performance Gains (Alpha Only)
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7.11
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Using Fast Path in Your Configuration
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7.12
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FIBRE_SCAN Utility for Displaying Device Information
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