Replication Set - Configuration

Table of Contents

Create a Replication Set

You can use the Wizard to create a Replication Set instead of using the procedure below; to do so, right-click the ContinuousDataReplicator icon in the CommCell, and select All Tasks, then select Replication Set Creation Wizard.

Required Capability: Capabilities and Permitted Actions

To create a Replication Set:

  1. In the CommCell Browser, right-click the ContinuousDataReplicator icon of the source machine, select All Tasks, then select Add Replication Set.
  2. In the General tab, specify a Name for the Replication Set, and a Destination Host that has CDR installed.

    On Windows, in the User Name field, specify a Windows User Account who has the following privileges:

    • Is a member of the local Administrators group on the destination.
    • Has read/write permissions to the product installation folders on the destination.
    • Has read/write permissions to the replication logs directory on the destination if it is not in the default location.
    • Has read/write permissions to the Job Results directory.

    On Unix, in Data Replication Type area, select Preserve Write Order option for database application. This enables the use of full data journaling necessary to preserve the consistency of the database during replication.

    For Scheduled Replication on Unix, the following options are selected by default to identify the backup data:

  3. In the Pre/Post Process tab, specify any commands to be run before a Recovery Point is created, and/or after one has been created, and specify a User Account with permissions to run the command(s) on the destination machine. For more information, see Pre/Post Processes.
  4. In the Replication Options tab, make any appropriate selections. See the following for more information:
  5. Optionally, make any appropriate selections in the Storage Policy tab. For more information about Recovery Points and backups, see Recovery Points.
  6. In the Orphan Files tab, specify how to treat data on the destination, which is not on the source machine. (See Data Replication - Orphan Files.)
  7. Optionally, select the minimum file size to perform hash comparisons, and the block size for hashing in the Advanced tab.
  8. Optionally, filter the content of any Replication Pairs that are created for this Replication Set in the Filters tab. To exclude data from data replication operations, do one of the following:
    • Click the Add button and, in the Enter Path window, type the complete path (including drive letter) of the file/folder/directory that you want to exclude from data replication. Repeat this step if you want to add more files/folders/directories to the filter.
    • Click the Browse button and expand the file system of the client computer. Click the file/folder/directory that you want to exclude from data replication and then click Add. Repeat this step for each additional entry.
  9. To configure User Security for the Replication Set, after it has been created, expand the ContinuousDataReplicator icon of the source machine, right-click the Replication Set and select Properties, then select the Security tab. For more information, see User Administration and Security.
  10. Click OK to save your changes.

  • To specify that all Replication Pairs created for this Replication Set are to use a Common Base Folder (the same folder on the destination host to contain all destination paths) see Edit a Replication Pair.

Create a Replication Set from a Replication Policy

Before You Begin

To create a Replication Set from a Replication Policy:

  1. In the CommCell Browser, right-click the Agent icon of the source machine, select All Tasks, then select Add Replication Set From Policy.
  2. In the Select a Policy dialog box, select the replication policy based on which you wish to create the replication set. The replication policies created for the corresponding agent will be displayed. Click OK.
  3. In the Enter Name dialog box, specify the name of the replication set, and click OK.
  4. The replication set will be created with the configurations available in the selected replication policy.

Delete a Replication Set

When you delete a Replication Set, all of the following are deleted as well:

  • all its Replication Pairs
  • all its Recovery Points
  • all its mounted and shared snapshots

Required Capability: Capabilities and Permitted Actions

To delete a Replication Set:

  1. Ensure that all Replication Pairs for the Replication Set you are deleting are in the "Stopped" or "New" state. If necessary, refer to Start/Suspend/Resume/Abort Data Replication Activity for instructions.
  2. In the CommCell Browser, right-click a Replication Set icon, and select All Tasks, then select Delete.

    If Recovery Points were created for this Replication Set and any of the snapshots were mounted, select the Unmount and delete any manually-mounted snapshots before deleting replication set option.

  3. Click OK in the confirmation screen.

Start, Suspend, Resume, or Abort Data Replication Activity for a Replication Pair

Before You Begin

Required Capability: Capabilities and Permitted Actions

To Start/Suspend/Resume/Abort a Replication Pair:

  • In the CommCell Browser, right-click a Replication Pair, and select Start, Start Full Resync, Suspend, Resume, or Abort.

    From the Replication Pair level, you cannot Suspend a Replication Pair that is in the Replicating state; instead, do this from the Replication Set level. See, Suspend Data Replication Activity from the Replication Set for step-by-step instructions.

Suspend Data Replication Activity from the Replication Set

Before You Begin

Required Capability: Capabilities and Permitted Actions

To suspend all data replication activity from the Replication Set level:

  1. In the CommCell Browser, right-click a Replication Set in the source machine, and select All Tasks, then select Suspend Data Transfer.
  2. For Windows, if you Suspend Data Transfer for one Replication set, you will be prompted with a list of Replication Set that have the same destination.

    If you click Yes all Replication Pairs on that source computer which use the same destination computer will be placed in the Paused state, even those that are in different Replication Sets.

    For UNIX, data replication activities are suspended for all Replication Pairs in the Replication Set.

Resume Data Replication Activity from the Replication Set

Before You Begin

Required Capability: Capabilities and Permitted Actions

To resume all data replication activity from the Replication Set level:

  1. In the CommCell Browser, right-click a Replication Set in the source machine, and select All Tasks, then select Resume Data Transfer.
  2. For Windows, you will be prompted with a list of Replication Set that have the same destination.

    Click Yes to resume all Replication Pairs between this source and destination - including the replication pairs in other replication sets.

    Click No to resume only the Replication Pairs in this replication set.

    For UNIX, data replication activities are resumed for all Replication Pairs in the Replication Set.

Configure the Replication Set for Data Encryption

Before You Begin

  • Encryption settings made at the Replication Set level are for encryption of data between the source machine and the destination machine.
  • Encryption must be enabled at the client level prior to configuring data encryption for a Replication Set residing on that client.

Required Capability: Capabilities and Permitted Actions

To configure data encryption for a Replication Set:

  1. From the CommCell Browser, right-click the Replication Set and select Properties.
  2. From the Replication Set Properties (Replication Options) tab, either select or clear Encrypt During Data Transfer.
  3. Click OK to save your settings and close the Replication Set Properties.

Enable or Disable Software Compression for a Replication Set

Compression settings made at the Replication Set level are for compression of data between the source computer and the destination computer.

  1. From the CommCell Browser, right-click the Replication Set and select Properties.
  2. From the Replication Set Properties (Replication Options) tab, either select or clear Compression ON.
  3. Click OK.

Add, Edit, or Delete Filters for a Replication Set

Before You Begin

  • When Filtering is edited for a Replication Set, any existing and active Replication Pairs will be automatically aborted and restarted to effect the change. If the newly configured filtering excludes files or folders that had previously been replicated, these files and folders on the destinations will be handled according to your Orphan Files settings.
  • To configure filters for a new Replication Set, see Create a Replication Set.

Required Capability: Capabilities and Permitted Actions

wedge.gif (136 bytes)To add/edit/delete a filter for a Replication Set:

  1. In the CommCell Browser, right-click a Replication Set on the source machine, and select Properties.
  2. In the Filters tab, specify the files and folders to filter from the content of any Replication Pairs that are created for this Replication Set.
  3. Click OK to save your changes.

Specify a Snap Engine

Before You Begin

  • Review Snapshot Engines - Support
  • In the source computer:
    • For Windows 2003 or higher, VSS is used as the default snap engine.
  • This procedure only applies to the destination computer.
  1. In the CommCell Browser, right-click the Replication Set on the source computer and select Properties.
  2. In the Replication Options tab, select one of the choices in the Select Snap Engine Type for Recovery Point Creation section.

    For Windows, VSS is the default selection; ONTAP can be used if available on the destination computer where the Recovery Point will be created.

    For UNIX, Snap Engine Type is automatically detected by the File System configured on the destination computer.

  3. Click OK to save your changes.

    On UNIX, CDR software automatically recognizes the File Systems configured on the destination computer and detects the appropriate snap engine. For more information on supported snap engines, see Snapshot Engines - Support.