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Configuring Replication Group for Volumes

A replication group is a source volume that can be replicated to a destination volume.

The source and destination servers must be Windows computers.

Before You Begin

Do not add multiple replication pairs using the same source server and destination server.

Procedure

  1. From the navigation pane, go to Disaster recovery > Replication.

    The Replication groups page appears.

  2. On the Replication Groups tab, click Configure replication group, and then select File System.

    The Configure replication groups - File System page appears.

  3. Click Volume level replication.

    The Configure replication pair page appears.

  4. From the Source client list, select the computer whose data you want to replicate.
  5. From the Destination client list, select the computer where you want to replicate the data.
  6. Under Volumes to replicate, click Add volume to add the source volume and the destination volume.
  7. From the Actions column, click Remove to remove a source volume or a destination volume.
  8. Under Recovery points interval options, from the Recovery Type list, select Latest recovery or Point in time recovery.
    • Latest recovery: Only maintain the most recent copy of the data at the destination server.
    • Point in time recovery: Maintain multiple recovery points at the destination server.

      Additional options appear when Point in time recovery is selected:

    • Recovery point store: Select the Recovery Point Store on the destination site where journal entries for each recovery point are stored.

      To configure a RP store, click Create recovery point store. For instructions, see Configuring the RP store for File System.

    • Crash-consistent recovery points interval: Select this option to create crash-consistent recovery points, and then specify the time interval at which recovery points are created.
    • Application-consistent recovery points interval: Select this option to create application-consistent recovery points, and then specify the time interval at which recovery points are created.

      When this option is selected, source volumes are quiesced to create application-consistent recovery points for the destination volumes.

    • Retain recovery points for: Select this option to specify how long journal entries for a recovery point should be retained.

      After this time period, the accumulated change history for recovery points is pruned from the RP Store and written to the destination volumes.

    • Merge recovery points older than: Select this option to combine older recovery points into larger recovery points that span a longer time range (for example, daily instead of hourly), and then specify the number of days that more frequent recovery points are retained.
    • Recovery point interval at the end of retention: Select this option to specify the time interval between the oldest recovery points in the RP Store.

      As recovery points get older and are merged, the interval between them grows larger. This option configures the maximum allowed interval for the oldest recovery points.

    • Switch to latest recovery if RP Store is offline for more than: Use this option to switch to live replication if the RP Store on the destination server is inaccessible for the time interval you specify.

      If you specify this option, the replication service abandons the RP Store if it does not come back online within the specified period. The replication service resyncs the destination volume with the source volume, and switches to live recovery instead of a point in time recovery operation. When this option is used, and the RP Store comes back online after the specified interval, all changes in the RP Store are erased and all accumulated recovery points in the RP Store are discarded.

      If you do not specify this option, the replication is paused, and the change journal accumulates on the source until the RP Store comes back online.

      With this option, you can choose whether to a) preserve the changes in the RP Store, but not apply them to the destination server while the RP Store is offline; or b) continually update the destination server, but lose all granular recovery points.

    • Prune and merge recovery points during off-peak time only: Use this option to specify whether to transfer updates for the oldest recovery points to destination server during off-peak hours.

      If you specify this option, recovery point updates are transferred to the RP Store only during off-peak hours, providing better replication performance during peak hours.

      If you do not specify this option, recovery point updates are transferred to the destination server on an ongoing basis, based on the value specified for the Retain recovery points for option.

      With this option, you can prioritize replication speed or reclaim space in the RP Store.

  9. Click Save.

Last modified: 3/19/2021 10:20:58 AM