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    • 9.2.0
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    • Understanding Volume Replicator
      • About Volume Replicator
        • Feature highlights of Volume Replicator
        • About Volume Replicator support for IPv6 and dual stack
      • Basic Volume Replicator terms
        • Primary and Secondary host
        • Write-order fidelity
        • Consistent data versus up-to-date data
        • Heartbeat protocol
      • Building blocks of Volume Replicator
        • Replicated Volume Group
        • Replicator Log volume
        • Replication Link - RLINK
        • Replicated Data Set
        • Data Change Map
      • Understanding replication in the Volume Replicator environment
        • Volume Replicator at the Primary
        • Volume Replicator at the Secondary
        • How replication happens in the Volume Replicator environment
      • Modes of replication
        • Synchronous mode of replication
          • Advantage of synchronous mode of replication
          • Disadvantages of synchronous mode of replication
        • Understanding data flow in Volume Replicator synchronous mode
        • Asynchronous mode of replication
          • Advantages of Asynchronous mode of replication
          • Disadvantages of Asynchronous mode of replication
      • Understanding data flow in Volume Replicator asynchronous mode
        • Synchronous override mode
      • Understanding data flow in an RDS that contains multiple Secondary hosts
      • Managing data during failure and recovery
        • Preventing data loss
          • Preventing data loss during normal operations
          • Preventing data loss during a Primary host failure
        • Maintaining data consistency
        • Detecting host and connection failures
        • Securing Volume Replicator
    • Replication concepts
      • About using Volume Replicator as a disaster recovery tool
        • Migrating the Primary role
        • Taking over the Primary role
        • Performing a takeover using the fast-failback option
      • Understanding how Volume Replicator logs writes to the Replicator Log
        • Sizing the Replicator Log
          • Determining the size of the Replicator Log
      • Understanding replication settings for a Secondary
        • Mode of replication - synchronous attribute
        • Using the available bandwidth effectively
          • Bandwidth of the available network connection
        • Choosing the network protocol
      • Measures to protect log overflow and replication latency
        • Replicator Log overflow protection - srlprot attribute
          • Replicator Log protection when Primary and Secondary are disconnected
          • Replicator Log protection when Primary and Secondary are connected
          • Changing between the states of Replicator Log protection
        • Latency protection - latencyprot attribute
          • Understanding latency protection
          • Latency protection when Primary and Secondary are connected
          • Latency protection when Primary and Secondary are disconnected
      • Pausing the replication
        • Pausing the replication from the Primary host
        • Pausing the replication from the Secondary host
        • Applications of the pause feature
      • Understanding checkpoints
      • Synchronizing the Secondary
        • Using Automatic Synchronization
          • Performing intelligent synchronization
        • Using incremental synchronization after log overflow
        • Using backup and checkpoint
      • Understanding Volume Replicator support for FlashSnap
        • About the snapshot operation
          • Conditions for creating disk group split friendly snapshots
          • Forcing the snapshot operation
        • About the snapback operation
      • About Synchronized Snapshots
        • How Volume Replicator creates synchronized snapshots
      • Understanding Bunker replication
        • About Bunker replication
        • Advantages of Bunker replication
        • How Bunker replication differs from normal replication
        • Bunker node workflow during normal operations
        • Using the Bunker node for disaster recovery
      • Understanding Volume Replicator Support for TCP Multi-Connection
        • Advantages of TCP Multi-Connection
      • About Volume Replicator compression
      • About Volume Replicator memory monitoring and control support
        • Advantages of memory monitoring
      • About Volume Replicator Graphs
        • General functionality constraints for Volume Replicator Graphs in a clustered environment
    • Setting up replication
      • About setting up replication
      • Best practices for setting up replication
      • Security considerations for Volume Replicator
        • Configuring the VxSAS Service
        • Enabling NAT support for Volume Replicator
      • Setting up replication using the Setup Replicated Data Set wizard
        • Prerequisites for setting up the RDS
      • Creating a Replicated Data Set (RDS)
      • Replication failover considerations with diverse network configurations
      • Setting up the Bunker RVG for replication
        • Prerequisites for setting up Bunker RVG
        • Best practices for creating the Bunker RVG
        • Adding the Bunker RVG to the RDS
    • Using the VEA Console for Volume Replication Operations
      • About performing Volume Replicator operations in the VEA console
      • Features of VEA console
      • Launching the VEA console
      • Managing connections
        • Connecting to a host
        • Disconnecting from a host
        • Reconnecting hosts at startup
        • Using history to view recent connections
        • Managing favorites
        • Adding a host to the favorites
        • Removing a host from the favorites
        • Switching connections
      • Layout of the VEA console
        • Performing tasks related to views
        • Selecting objects
        • Left pane or navigation view (tree view)
        • Right pane or details view (tabular view)
        • Status pane
          • Console view
          • Tasks view
        • URL bar
        • Perspectives
          • Control Panel
            • Changing the IPv6 preference through the Control Panel
        • Menu bar and toolbar
      • Accessing the Volume Replicator options
        • Menu bar options
          • File menu
          • Tools menu
          • Actions menu
          • Toolbar options
      • Exiting the VEA client
    • Monitoring replication
      • About monitoring replication
      • Interpreting the information in the Volume Replicator views
        • Viewing all the RDSs on the host
        • Viewing RDS information
          • RVG states
          • Replication status
        • Viewing information about the Primary RVG
        • Viewing information about the Secondary RVG
        • Viewing information about the Primary data volume
        • Viewing the Replicator Log volume information
        • Viewing information about the Secondary data volume
      • Monitoring replication using the VEA console
        • Displaying the monitor view
        • Specifying preferences for the monitor view
        • Interpreting the information in the monitor view
          • Configuration information
          • Log usage information
          • Obtaining replication status information
          • Obtaining statistical information
          • Interpreting error information
      • Checking replication performance using vxrlink stats
        • Identifying the most up-to-date Secondary
      • Analyzing Volume Replicator performance
      • Monitoring alerts to interpret error conditions
      • Handling Volume Replicator events
    • Administering Volume Replicator
      • About administering Volume Replicator
      • Modifying the configuration
      • Adding volumes
        • Prerequisite for adding data volumes to an RDS
      • Adding a Secondary host
      • Administering the RVG
        • Enabling or disabling data access to the RVG data volumes
        • Expanding the data volumes
        • Expanding the Replicator Log
        • Shrinking the data volumes
          • Before shrinking a data volume
          • Shrinking a data volume
        • Adding or removing the DCM logs from the data volumes
          • Adding or removing the DCM logs for all volumes in an RVG
        • Resynchronizing the Secondary hosts
        • Associating or dissociating the Replicator Log volume
          • Associating the Replicator Log with the RVG
          • Dissociating the Replicator Log volume on an RVG
      • Administering replication
        • Disabling the SwiftSync feature
        • Starting replication through the VEA console
        • Stopping replication using the VEA console
        • Changing replication settings for an RDS
        • Managing checkpoints
          • Ending the checkpoint
        • Pausing replication using Volume Replicator
          • Notes on pausing the replication
          • Pausing Secondary from the Primary
          • Resuming the Secondary host from Primary
          • Pausing the Secondary host from the Secondary
        • Converting the Primary to a Secondary
        • Migrating the Primary role within an RDS
        • Creating snapshots for the data volumes
          • Reattaching the snapshots back to the original volumes
        • Creating synchronized snapshots using the VSS Snapshot wizard
          • About snapshot naming convention on the Secondary
          • Creating synchronized snapshot sets
          • Prerequisites for creating synchronized snapshot sets
          • Creating schedules for synchronized snapshots
          • Displaying the status of the scheduled synchronized snapshot
          • Reattaching synchronized snapshots
          • Deleting a synchronized snapshot schedule
        • Recovering the RVG
        • Restoring the Secondary
        • Migrating VVR to support IPv6 or dual stack
      • Administering Bunker replication
        • Stopping the replication
        • Pausing Secondary
        • Changing replication settings for Bunker RVG
        • Associating or dissociating the Replicator Log
          • Dissociating the Replicator Log volume on Bunker RVG
          • Associating the Replicator Log with Bunker RVG
        • Activate Bunker
        • Deleting the Bunker Secondary
      • Performing disaster recovery operation
        • Using the Bunker node to update the Secondary
        • Resynchronizing the original Primary when it becomes available
        • Updating the Secondary from the Bunker
        • Taking over the Primary role using the fast-failback option
          • Performing takeover with fast-failback
            • Prerequisites for takeover with fast-failback
          • Performing takeover without using fast-failback
          • General notes on take over operation
        • Performing takeover in a multiple Bunker setup
      • Deleting Volume Replicator objects
        • Removing data volumes
          • Understanding the remove data volume behavior in different scenarios
        • Deleting the replicated data set
        • Deleting the Primary RVG
        • Deleting the Secondary RVG
      • Accessing data on Secondary host
        • Creating a mirror break-off
        • Creating snapshots
      • Performing automated system recovery (ASR)
        • Automated system recovery (ASR) overview
        • Volume Replicator support for ASR
        • ASR recovery process
          • Considerations when restoring a Secondary with a healthy Primary
        • Microsoft Cluster recovery
      • Alternative methods to synchronize the Secondary faster
        • Method 1- Moving the Secondary RVG disk group on to a spare server within the same LAN as the Primary
        • Method 2- Using snapshots for synchronizing the Secondary data volumes
          • Renaming Volumes on the Secondary host
        • Method 3- Using mirrored plexes to synchronize the Secondary
          • Renaming mirror-breakoff volumes on the Secondary host
      • Obtaining statistical information through Volume Replicator Graphs
        • Graph types and usage
        • Viewing statistical information using Volume Replicator Graph
          • Viewing online bandwidth usage for an RLINK
          • Viewing Historic bandwidth usage for an RLINK
          • Viewing Volume Replicator Non-Paged Pool (NPP) Memory Graph
          • Saving an Online or Historic bandwidth usage graph
          • Re-opening a saved CSV graph file
          • Starting or stopping the Historic Bandwidth Data Collection
    • Using the command line interface
      • About using the command line interface
      • Conventions for command line syntax
      • Administering the RDS using the vxrds command
        • Activating the Bunker RVG
        • Creating and adding a Secondary RVG
        • Adding an existing volume to the RDS
        • Adding a Bunker node
        • Changing the host name or IP
        • Creating the Primary RVG
        • Deactivating the Bunker RVG
        • Deleting the Bunker node
        • Deleting the Secondary
        • Deleting the Primary
        • Dissociating data volumes
        • Resynchronizing a failed Primary with the new Primary
        • Converting a Primary to a Secondary
        • Migrating the Primary to a Secondary
        • Pausing replication using the vxrds pauserep command
        • Displaying the RDS
        • Resizing the data volumes
          • Before resizing a data volume
          • Shrinking a data volume
        • Growing the Replicator Log volume
        • Resuming replication after pausing
        • Resynchronizing the Secondary
        • Setting replication attributes
        • Starting replication using the vxrds startrep command
        • Stopping replication using the vxrds stoprep command
        • Taking over the Primary role using the vxrds takeover command
        • Performing RLINK Operations using the vxrlink command
        • Associating a Secondary
        • Attaching a Secondary
        • Displaying the list of Secondary checkpoints
        • Deleting the Secondary checkpoint
        • Detaching an RLINK
        • Dissociating an RLINK
        • Creating new RLINK
        • Pausing the RLINK
        • Recovering the RLINK
        • Restoring the RLINK
        • Resuming the RLINK
        • Removing the RLINK
        • Setting the RLINK attributes
        • Displaying the network statistics for the RLINK
          • Output values for vxrlink stats without the -e option
          • Output values for vxrlink stats with the -e option
        • Displaying the RLINK status
        • Identifying the most up-to-date Secondary
        • Verifying the RLINK
        • Starting the Historic Bandwidth Data Collection using the CLI
        • Stopping the Historic Bandwidth Data Collection using the CLI
      • Administering the RVGs using the vxrvg command
        • Adding DCM log
        • Associating the Replicator Log volume to an RVG
        • Associating data volume with the RVG
        • Ending checkpoint
        • Starting the checkpoint
        • Deleting the RVG checkpoint
        • Displaying RVG checkpoints
        • Dissociating volumes from RVG
        • Dismounting data volumes
        • Creating new RVG
        • Converting a Secondary RVG to Primary RVG
        • Converting a Primary RVG to Secondary RVG
        • Recovering the RVG
        • Removing an RVG
        • Resynchronizing the RVG
        • Setting RVG attributes
        • Creating snapshots for data volumes in an RVG
        • Reattaching the snapshot volumes back to the data volumes in an RVG
        • Enabling data access (Starting the RVG)
        • Generating application statistics
        • Disabling data access (stopping the RVG)
      • Displaying information using the vxprint command
        • Displaying a specific RLINK
        • Interpreting RLINK flag settings
        • Displaying an individual RVG
          • Interpreting RVG flag settings
        • Displaying an individual data volume or Replicator Log
      • Creating snapshots using the vxsnap command
        • Preparing volumes for snapshots
        • Creating Synchronized Snapshots
          • About snapshot naming convention on the Secondary
        • Reattaching the Snapshots
      • Displaying memory statistics using the vxmemstat command
      • Administering replicated volumes using the vxvol command
        • Associating a data volume with an RVG
        • Associating a volume to an RVG as a Replicator Log
        • Dissociating a volume from an RVG
      • Displaying and changing replication ports using the vrport command
        • Displaying or setting ports for replicating data
        • Displaying or setting ports for heartbeats
        • Displaying or setting ports for vradmind
        • Displaying or setting ports for vxrsyncd
      • Administering the RVG using the vxedit
        • Deleting the Volume Replicator objects
        • Setting the attributes
      • Administering the RVG using the vxassist command
        • Adding a DCM log
        • Growing the volumes
        • Removing a DCM log
      • Tuning Volume Replicator
        • Displaying the tunable values
        • Setting the tunable values
      • Examples- Using the command line
        • Sample setup using the command line
        • Example 1- Setting up replication using the command line interface
          • Creating the RLINK on the Primary system VVRPRI
          • Creating the Primary RVG on the Primary system VVRPRI
          • Creating the RLINK on the Secondary system VVRSEC
          • Creating the Secondary RVG on Secondary system VVRSEC
          • Attaching the RLINKs and starting replication on the Secondary
          • Attaching the RLINKs and starting replication on the Primary
        • Example 2- Setting up Bunker replication
        • Example 3- Using Bunker node for disaster recovery
          • Updating the Secondary from the Bunker
          • Transferring the Primary role
          • Restoring the original Primary in a Bunker setup
          • Migrating the Primary role back to the original Primary
          • Recovering the original Primary during Bunker replay
          • Failing back to the original Primary
          • Restoring the Bunker setup after failback to original Primary
        • Example 4- Using synchronized snapshots to restore data
          • Sample setup showing how to restore data using synchronized snapshots
          • Configuration Details
          • Preparing the Volumes
          • Creating snapshot volumes
          • Using the snapshots to recover the corrupted volumes
          • Restoring the original Primary
          • Migrating the Primary role back to the original Primary (failing back to the original Primary)
    • Configuring Volume Replicator in a VCS environment
      • About configuring Volume Replicator in a VCS environment
      • Components of a VCS cluster
        • Resources
        • Attributes
        • Service groups
          • Application Service group
          • Replication Service group
      • Illustrating a highly available Volume Replicator setup
        • List of agents for Volume Replicator
      • How the agents work
        • VvrRvg agent
          • VvrRvg agent-specific functions, state definitions, and attributes
          • Sample replicated Service group definition
          • Dependency graph
          • Resource dependencies within a replication Service group
          • Service group dependencies
        • RVGPrimary agent
          • Typical multiple Secondary setup
          • How the agent works in a multiple Secondary setup
          • How the agent works in a Bunker set up
          • RVGPrimary agent-specific functions, state definitions, and attributes
          • Sample RVGPrimary resource definition
      • Configuring the agents
        • About configuring the Disaster Recovery Solutions using the DR Wizard
        • Taking the application group offline on Secondary
        • Setting up replication using a virtual IP address
        • Changing the Primary and Secondary IP
        • Creating RLINKs between each pair of Secondary hosts
        • Creating the replication service group
          • Prerequisites for creating the replication service group
      • Working with existing replication service groups
        • Adding a new RVG resource to an existing replication Service group
        • Modifying an existing resource in the replication service group
    • Configuring Volume Replicator with Hyper-V
      • Implementing Volume Replicator replication on Hyper-V with Microsoft failover cluster
      • Prerequisites for setting up Volume Replicator with Hyper-V
      • Configuring a virtual machine group and resource dependencies
      • Configuring replication for the virtual machine
        • Setup 1- Replicating the System as well as Data disks
        • Setup 2- Replicating the Data disks
      • Recommendations and workarounds
    • Advanced settings in Volume Replicator
      • About using the advanced settings in Volume Replicator
      • Tuning the Volume Replicator memory parameters
        • Understanding the concept of a buffer space
          • Shared memory between Volume Replicator and SFW
          • Minimum memory required by SFW and Volume Replicator
          • Size of the memory available on the Secondary
          • Readback buffer space on the Primary
        • Modifying the tunable values
      • Understanding IBC messaging
        • Features of the IBC messaging
        • Application of IBC messaging
        • IBC messaging commands
          • Command arguments
          • Registering an application
          • Unregistering the application
          • Sending a message
          • Receiving a message
          • Unfreezing the Secondary RVG
          • Displaying registered application names
          • Registering and sending messages
          • Registering and receiving messages
        • Example- Using the IBC messaging facility to take snapshots
          • Sample setup showing how to take snapshots using the IBC messaging facility
    • Troubleshooting Volume Replicator
      • About troubleshooting Volume Replicator
      • Recommendations and checks
        • Encrypted files on replicated volumes
        • Selecting the mode of replication
        • Volume Replicator issues when Norton AntiVirus scan is performed
        • Monitor view does not display the RDS information
        • Preventing the connect problems
        • Configuration checks for RLINKS
        • Network, process, and operating system checks
        • Configuration checks for volume mappings
        • Troubleshooting Volume Replicator performance
        • Other information and checks
      • Recovering from problems in a firewall or NAT setup
        • Errors when replicating across a firewall
      • Recovering from problems during replication
        • Permission denied errors when performing Volume Replicator Operations
        • Error when configuring the VxSAS Service
          • Configuring the VxSAS using the Service Control Manager
        • VEA Service is not started
        • Connecting to cluster having multiple IP addresses
        • Error when disabling data access to the RVG, creating Secondary RVG, adding volumes
        • Error when resizing volumes
        • Replica link already exists
        • Unable to perform delete RDS, add volume, delete volume
        • Removing the Replicator Log volume mirror
        • Pausing when writes are in progress
        • Unable to see volume name for associating Replicator Log
        • Unable to see the volume names for adding volumes to RDS
        • Adding logs to dissociated volumes
        • Using two commands in succession
        • Renaming dynamic disk group while importing
        • Problems when performing the snapshot operation
        • Operation time-out errors
          • The vxrvg stop command displays operation time-out error
          • Pausing Secondary from Primary displays operation time-out error
      • Problems when configuring Volume Replicator in a VCS environment
        • Application Service group does not failover correctly
      • Problems when setting performance counters
        • Volume Replicator objects are not displayed
      • Volume Replicator 7.4.2 Administrator's Guide - Windows - v7.4.2
    • Services and ports
      • InfoScale ports and services
    • Using the vxrsync utility
      • About using the vxrsync utility
      • When to use vxrsync
      • Understanding how the utility works
        • Layout of the configuration file
          • Sample configuration file layout
        • Using the vxrsync utility with the vxrclient component
          • vxrclient
          • vxrserver
      • Example- Using vxrsync for difference-based synchronization
    • VR Advisor (VRAdvisor)
      • Introducing Volume Replicator Advisor (VRAdvisor)
        • Overview of VRAdvisor
        • How VRAdvisor works
          • Data collection
          • Data analysis
          • What-if analysis
      • Installing Volume Replicator Advisor (VRAdvisor)
      • Uninstalling VRAdvisor on Windows
      • Collecting the sample of data
        • Collecting sample data using the VRAdvisor Wizard
        • Collecting the sample data using the diskStats command
      • Analyzing the sample of data
        • Understanding the results of the analysis
          • Viewing the analysis results
            • Analysis graph
            • Analysis results
          • Recalculating the analysis results
            • Applying different parameters to the existing sample of data
            • Performing What-if analysis
          • Recording and viewing the results
      • Sizing the SRL
        • Overview
        • Peak usage constraint
        • Synchronization period constraint
        • Secondary backup constraint
        • Secondary downtime constraint
        • Additional factors
          • Example
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    Volume Replicator 7.4.2 Administrator's Guide - Windows - v7.4.2
    Troubleshooting Volume Replicator

    Troubleshooting Volume Replicator

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    Last published : Jun 12, 2026
    This section includes the following topics:
    • About troubleshooting Volume Replicator
    • Recommendations and checks
    • Recovering from problems in a firewall or NAT setup
    • Recovering from problems during replication
    • Problems when configuring Volume Replicator in a VCS environment
    • Problems when setting performance counters
    • Ignore error when adding secondary using VEA
    Related information
    About troubleshooting Volume ReplicatorRecommendations and checksRecovering from problems in a firewall or NAT setupRecovering from problems during replicationProblems when configuring Volume Replicator in a VCS environmentProblems when setting performance countersVolume Replicator 7.4.2 Administrator's Guide - Windows - v7.4.2

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