Modifying Properties of a Remote Replication Pair

Procedure

1. Choose Data Protection > Protection Entity > Dtree > Remote Replication Pair.
2. Select a desired account from the Account drop-down list in the upper left corner.
3. Click More on the right of a desired remote replication pair and select Modify.

   The Modify Remote Replication Pair page is displayed on the right.

4. Modify properties of the remote replication pair. Table 1 describes related parameters.

   Table 1 Remote replication pair parameters

   Parameter	Description
   Speed	Data synchronization speed of the remote replication pair. The value ranges from 1 MB/s to 10,240 MB/s (or 1024 KB/s to 10,485,760 KB/s). During initial synchronization, the recommended speed is 100 MB/s or higher. During incremental synchronization, if the service load is heavy, the recommended speed is 0 MB/s to 20 MB/s. During incremental synchronization, if the service load is relatively heavy, the recommended speed is 20 MB/s to 70 MB/s. During incremental synchronization, if the service is idle, the recommended speed is 100 MB/s or higher. The default value is 32 MB/s.
   Recovery Policy	Whether the remote replication pair automatically synchronizes data after an internal I/O error of remote replication is rectified or the replication link is up. [Value range] Automatic: The system automatically synchronizes data. The pair enters the Synchronizing state. Manual: Data must be synchronized manually. The pair enters the To be recovered state.
   Sync Type	Data synchronization mode of the primary and secondary resources of the pair. The value can be: Manual: Data must be manually synchronized between the primary and secondary resources. Timed wait after sync begins: The system starts timing as soon as the latest synchronization begins. After the time specified in Interval is reached, the system automatically starts data synchronization between the primary and secondary resources again. NOTE: If the last synchronization has not finished after the time specified in Interval is reached, the system performs the next synchronization after the last synchronization finishes. Timed wait after sync ends: The system starts timing after the last synchronization finishes. After the time specified in Interval is reached, the system automatically starts data synchronization between the primary and secondary resources again. Specific time policy: The system automatically synchronizes data between the primary and secondary resources based on a specific time policy.
   Interval	Synchronization interval for Timed wait after sync begins and Timed wait after sync ends. [Value range] The value is an integer ranging from 1 to 1440 when minutes is used as the unit. The value is an integer ranging from 30 to 59 when seconds is used as the unit. NOTE: This parameter is available only when Sync Type is set to Timed wait after sync begins or Timed wait after sync ends.
   Time Policy	Specific time policy: The system automatically synchronizes data between the primary and secondary resources based on a specific time policy. [Value range] Weekly: Data synchronization begins at a specific time on a specific day. Its value ranges from 00:00 Monday to 23:59 Sunday. Daily: Data synchronization begins at a specific time every day. Its value ranges from 00:00 to 23:59. Hourly: Data synchronization begins at a specific minute every hour. Its value is an integer ranging from 0 to 59. NOTE: This parameter is available only when Sync Type is set to Specific time policy.
   Copy Snapshot Retention in Secondary Resource	Retention policy of copy snapshots. The value can be: Do not retain: No copy snapshot will be created in the secondary resource after pair synchronization. Retain: The system will create a copy snapshot in each secondary resource each time after pair synchronization to capture the data state of the primary resources at the time when pair synchronization begins. NOTE: A copy snapshot created under a copy snapshot retention policy in a secondary resource is a replication snapshot. To view such snapshots, choose Data Protection > Protection Entity > Dtree > Snapshot and filter snapshots by Type on DeviceManager.
   Copy Snapshots Retained in Secondary Resource	Number of copy snapshots retained in the secondary resource. When the number of copy snapshots in the secondary resource exceeds the value of this parameter, the system deletes the earliest copy snapshots by default. [Value range] 1 to 512 NOTE: This parameter is available only when Copy Snapshot Retention in Secondary Resource is set to Retain. The name of a copy snapshot is prefixed by rep_copy.

5. Click OK.