Volume Replicator 7.4.1 Administrator's Guide - Windows
- Understanding Volume Replicator
- About Volume Replicator
- Basic Volume Replicator terms
- Building blocks of Volume Replicator
- Understanding replication in the Volume Replicator environment
- Modes of replication
- Understanding data flow in Volume Replicator asynchronous mode
- Managing data during failure and recovery
- Replication concepts
- About using Volume Replicator as a disaster recovery tool
- Understanding how Volume Replicator logs writes to the Replicator Log
- Understanding replication settings for a Secondary
- Measures to protect log overflow and replication latency
- Pausing the replication
- Synchronizing the Secondary
- Understanding Volume Replicator support for FlashSnap
- About Synchronized Snapshots
- Understanding Bunker replication
- Understanding Volume Replicator Support for TCP Multi-Connection
- About Volume Replicator memory monitoring and control support
- About Volume Replicator Graphs
- Setting up replication
- Security considerations for Volume Replicator
- Setting up replication using the Setup Replicated Data Set wizard
- Setting up the Bunker RVG for replication
- Using the VEA Console for Volume Replication Operations
- Monitoring replication
- Interpreting the information in the Volume Replicator views
- Monitoring replication using the VEA console
- Checking replication performance using vxrlink stats
- Administering Volume Replicator
- Adding volumes
- Administering the RVG
- Administering replication
- Managing checkpoints
- Pausing replication using Volume Replicator
- Creating snapshots for the data volumes
- Creating synchronized snapshots using the VSS Snapshot wizard
- Administering Bunker replication
- Performing disaster recovery operation
- Deleting Volume Replicator objects
- Accessing data on Secondary host
- Performing automated system recovery (ASR)
- Alternative methods to synchronize the Secondary faster
- Obtaining statistical information through Volume Replicator Graphs
- Using the command line interface
- Administering the RDS using the vxrds command
- Resizing the data volumes
- Displaying the network statistics for the RLINK
- Administering the RVGs using the vxrvg command
- Displaying information using the vxprint command
- Creating snapshots using the vxsnap command
- Administering replicated volumes using the vxvol command
- Displaying and changing replication ports using the vrport command
- Administering the RVG using the vxedit
- Administering the RVG using the vxassist command
- Tuning Volume Replicator
- Examples: Using the command line
- Example 1: Setting up replication using the command line interface
- Example 3: Using Bunker node for disaster recovery
- Example 4: Using synchronized snapshots to restore data
- Configuring Volume Replicator in a VCS environment
- Components of a VCS cluster
- Illustrating a highly available Volume Replicator setup
- How the agents work
- Configuring the agents
- Working with existing replication service groups
- Configuring Volume Replicator with Hyper-V
- Advanced settings in Volume Replicator
- Troubleshooting Volume Replicator
- Recommendations and checks
- Recovering from problems in a firewall or NAT setup
- Recovering from problems during replication
- Error when configuring the VxSAS Service
- Operation time-out errors
- Problems when configuring Volume Replicator in a VCS environment
- Problems when setting performance counters
- Appendix A. Services and ports
- Appendix B. Using the vxrsync utility
- Appendix C. VR Advisor (VRAdvisor)
Displaying or setting ports for replicating data
Use the vrport data command to display the ports that are used to replicate data from Primary to Secondary. This command displays both the TCP or UDP ports depending on what has been specified. To change the ports that are used to replicate data, specify the list of port numbers to use with the vrport data command.
Each RLINK requires one UDP port for UDP communication and a TCP+UDP port for TCP replication. Make sure that you specify an unused, reserved port number so that there is no port conflict with other applications. The number of ports that are specified must be equal to or greater than the number of RLINKs on the system.
To display the ports that are used to replicate data:
vrport data
To change the ports that are used to replicate data:
vrport data <portlow>-<porthigh>
To change the port numbers you need to specify a range of values. After you have changed the data port the new value is immediately reflected in the output of the vrport command. Run the vrport data command after changing the value to verify that the port number has changed. RLINKs must be disconnected and connected for these port numbers to get reflected. To disconnect and connect the RLINKs, use the Pause and Resume replication feature of Volume Replicator.
In case of multiple TCP connection, if tcp_src_port_restrict tunable is set to False, these data ports do not work. This tunable must be set to True for the data port values to get reflected.
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