Document Outline

• HP XP P9000 External Storage Access Manager User Guide
• Contents
• 1 External Storage Access Manager overview
  • How ESAM works
  • ESAM components
    • P9500 storage systems
    • Main and remote control units
    • Pair volumes
    • Data paths
    • Quorum disk
    • Multipath software
    • Remote Web Console GUI
    • RAID Manager (RAID Manager)
  • Data replication
  • Failover
• 2 System implementation planning and system requirements
  • The workflow for planning External Storage Access Manager implementation
  • Required hardware
  • Multipath software
  • Storage system requirements
  • Licenses
  • License capacity
  • Pair volume requirements
  • Quorum disk requirements
  • Data path requirements and recommendations
  • Remote Web Console requirements
  • External storage systems
  • Planning failover
  • Preventing unnecessary failover
  • Sharing volumes with other HP software products
    • Cache Partition
    • Cache Residency
    • Performance Monitor
    • LUN Manager
    • Open Volume Management
    • LUN Expansion
    • Configurations with Business Copy volumes
      • Configuring ESAM with Business Copy
    • Configurations with Continuous Access Journal volumes
      • Configuring ESAM with Continuous Access Journal
• 3 System configuration
  • The basic workflow for configuring the system configuration
  • Connecting the hardware components
    • Prerequisites
    • The workflow for connecting the hardware components
  • Installing and configuring software
    • Additional documentation
    • Prerequisites
    • The workflow for installing and configuring External Storage Access Manager
  • Configuring the primary and secondary storage systems
    • Additional documentation
    • Prerequisites
    • Workflow
  • Configuring the quorum disks
    • Prerequisites
    • Procedure
  • Adding the ID for the quorum disk to the storage systems
    • Prerequisites
    • Procedure
  • Configuring host mode options
    • Prerequisites
    • Procedure
• 4 Working with volume pairs
  • Workflow for ESAM volume pairs
  • Reasons for checking pair status
  • When to check pair status?
  • How pair status reflects system events and use
  • What pairs information can you view and where is it?
    • Where to find the information
  • How hosts see volume pairs
  • Checking pair status
  • Pair status values
    • Split types (PSUS status)
    • Suspend types (PSUE status)
  • Volume pair creation
    • Creating an ESAM pair
      • Prerequisites
      • Procedure
  • To verify host recognition of the ESAM P-VOL and S-VOL
  • How multipath software shows storage serial number for pairs
  • Splitting pairs
    • Prerequisites
    • Procedure
  • Resynchronizing pairs
    • Reverse resynchronization
      • Prerequisites
      • Procedure
  • Releasing a pair
  • Changing Continuous Access Synchronous pairs to ESAM pairs
    • Requirements
    • Procedure
  • Comparison of the RAID Manager commands and Remote Web Console
• 5 System maintenance
  • Applications used to perform maintenance tasks
    • Required Remote Web Console settings
  • Related documentation
  • The different types of maintenance tasks
    • Switching paths using multipath software
    • Discontinuing ESAM operations
    • Quorum disk ID deletion
      • Deleting quorum disk IDs (standard method)
      • Deleting quorum disk IDs by system attribute (forced deletion)
    • Recovery of accidently deleted quorum disks
      • Recovering the disk when the P-VOL was receiving host I/O at deletion
      • Recovering the disk when the S-VOL was receiving host I/O at deletion
    • Planned outages for system components
      • Options for performing the planned outages
      • The procedures for performing planned outages
      • Performing planned outages (quorum disk only)
      • Performing planned outages (primary storage system and quorum disk)
      • Performing planned outages (secondary storage system and quorum disk)
      • Performing planned outages (both storage systems and quorum disk)
• 6 Disaster recovery
  • Main types of failures that can disrupt your system
  • The basic recovery process
  • System failure messages
  • Detecting failures
    • Option 1: Check for failover first
      • Using Remote Web Console to check for failover
      • Using RAID Manager to check for failover
      • Using multipath software to check for failover
    • Option 2: Check for failures only
  • Determining which basic recovery procedures to use
    • Selecting Procedures
  • Recovery from blocked pair volumes
    • Recovering from primary volume failure on the MCU
    • Recovering from secondary volume failure on the MCU
    • Recovering from primary volume failure on the RCU
    • Recovering from secondary volume failure on the RCU
  • Recovery from quorum disk failure
    • Replacement of quorum disks
      • Replacing a quorum disk when the MCU is receiving host I/O
      • Replacing a quorum disk when the RCU is receiving host I/O
  • Recovery from power failure
    • primary storage system recovery
      • Recovering the system when the RCU is receiving host I/O updates
      • Recovering the system when host I/O updates have stopped
    • Secondary system recovery
      • Recovering the system when the P-VOL is receiving host updates
      • Recovering the system when host updates have stopped
  • Recovery from failures using resynchronization
    • Required conditions
    • Determining which resynchronization recovery procedure to use
      • Prerequisites
      • Procedure
    • Recovering primary volume from Business Copy secondary volume
      • Prerequisites
      • Procedure
    • Recovering secondary volume from Continuous Access Journal primary volume
      • Prerequisites
      • Procedure
    • Postrequisites
  • Recovering from path failures
  • Allowing host I/O to an out-of-date S-VOL
  • Recovery for pairs shared by multiple hosts with VMware
• 7 Using ESAM in a cluster system
  • Cluster system architecture
  • Required software
  • Supported cluster software
  • Configuration requirements
  • Configuring the system
  • Disaster recovery in a cluster system
  • Restrictions
• 8 Troubleshooting
  • Potential causes of errors
  • Is there an error messages for every type of failure?
  • Where do you look for error messages?
  • Basic types of troubleshooting procedures
  • Troubleshooting general errors
  • Suspended volume pair troubleshooting
    • The workflow for troubleshooting suspended pairs when using Remote Web Console
    • Troubleshooting suspended pairs when using RAID Manager
      • Location of the RAID Manager operation log file
      • Example log file
      • Related topics
  • Recovery of data stored only in cache memory
    • Pinned track recovery procedures
    • Recovering pinned tracks from volume pair drives
    • Recovering pinned tracks from quorum disks
• 9 Support and other resources
  • Contacting HP
    • Subscription service
    • Documentation feedback
  • Related information
    • HP websites
  • Conventions for storage capacity values
  • Typographic conventions
  • Rack stability
• A Conventions
  • Business Copy and Snapshot volumes
• B ESAM GUI reference
  • Pair Operation window
    • Possible VOL Access values for pairs
    • Detailed Information dialog box
    • Paircreate(ESAM) dialog box
    • Pairsplit-r dialog box
    • Pairresync dialog box
    • Pairsplit-S dialog box
  • Quorum Disk Operation window
    • Add Quorum Disk ID dialog box
• Glossary
• Index