Document Outline

• HP StoreEver Tape Libraries Failover User Guide
• Contents
• 1 Overview
  • Traditional library control path and drive connections without failover
  • Basic path failover
    • Basic data path port failover details
    • Basic control path failover details
    • Technology for basic control path failover
  • Advanced path failover
    • Driver operation during device open
    • Opening a connection to a library control path
    • Driver operation during normal communications
    • Path failure detection
    • Path failure recovery
    • Active and passive control path drives
    • Library controller path failure recovery
• 2 Enabling basic path failover
• 3 Installing advanced path failover
  • Preparing the SAN
    • Minimize host access
    • Configure redundant connections
    • Review the SAN design guidelines
  • Preparing the library
  • Preparing the host
• 4 Preparing the switches and hosts for failover
  • Hardware-specific requirements for basic failover
    • Brocade switches
    • Cisco switches
  • Hardware-specific requirements for advanced path failover
    • B-Series switches
    • C-Series switches
    • H-Series switches
• 5 Configuring failover for the HP StoreEver ESL G3 Tape Libraries
  • Configuring data path failover
    • Enabling data path failover
    • Verifying data path failover
    • Diagnosing basic data path failover
    • Disabling data path failover
  • Configuring control path failover
    • Enabling control path failover
    • Configuration requirements after enabling control path failure
      • Library configuration
      • SAN configuration
    • Verifying control path failover
    • Disabling control path failover
• 6 Configuring failover for HP StoreEver MSL6840 Tape Libraries
  • Configuring control path failover
    • Enabling control path failover
    • Configuration requirements after enabling basic control path failure
    • Verifying control path failover
  • Configuring data path failover
    • Enabling data path failover
    • Verifying data path failover
• 7 Configuring failover for other HP StoreEver MSL Tape Libraries
  • Configuring data path port failover
    • Enabling data path port failover
    • Verifying data path port failover
  • Configuring basic control path failover
    • Enabling control path port failover on the library
    • Configuration requirements after enabling control path failure
    • Verifying basic control path failover
• 8 Installing and using Windows advanced path failover drivers
  • Installing the Windows advanced path failover drivers
    • Downloading and installing the drivers
    • Uninstalling drivers
  • Windows driver theory of operation
    • Driver components
      • Storage bus filter driver
      • Multi-path intermediate class driver
      • Device manager view
    • Device firmware
• 9 Installing and using Linux advanced path failover drivers
  • Installing advanced path failover drivers
  • Updating the driver without rebooting
  • Device files
  • Command line user interface
    • Viewing the current driver revision
    • Viewing device status
    • Setting the preferred path
    • Path rotation exercise function
  • Enabling advanced path failover on a device while the driver is running
  • Disabling advanced path failover on a device while the driver is running
  • Linux driver theory of operation
• 10 Installing and using HP-UX advanced path failover drivers
  • Installing advanced path failover drivers
  • Commands for viewing tape and library devices connected to a system
  • Finding the lockdown path
  • Troubleshooting advanced path failover
  • Enabling or disabling advanced path failover
• 11 Troubleshooting failover operation
  • Locating a failed path
  • Windows debugging logs and tools
    • Confirming failover operation
    • Windows system log
    • Diagnostic application
      • Operation
      • Actions
    • Diagnostic dumps
      • Memory dump setup
      • Driver debug dump setup
      • Bug checks
      • Hangs
  • Linux logs and troubleshooting tools
    • Report cached reservation information
    • Debug output control
    • Reading the trace log
  • Library path failover events
  • Additional tape drive sense codes
• 12 Advanced troubleshooting techniques
  • Windows driver debug dump setup
• 13 Support and other resources
  • HP technical support
  • HP websites
  • Typographic conventions
  • Subscription service
  • HP-authorized reseller
• A Data Protector device discovery with advanced path failover
• Index