Elastic Compute Service:Create and activate a replication pair-consistent group

Procedure

1. Log on to the Elastic Block Storage (EBS) console.

2. In the left-side navigation pane, choose Enterprise-level Features > Replication Pair-Consistent Group.

3. In the top navigation bar, select the region and resource group to which the resource belongs.

4. Create a replication pair-consistent group.

   1. Click the Primary Site or Secondary Site tab and then click Create Replication Pair-consistent Group.

   2. In the Create Replication Pair-Consistent Group panel, configure the parameters and click Confirm.

      The following table describes the parameters.

      Parameter	Description
      Group Name	Enter a name for the replication pair-consistent group.
      Production Region	The production region is automatically set to the current region and cannot be changed. The production region is also called the primary region. Make sure that the primary disks in the replication pairs that you want to add to the replication pair-consistent group reside in the current region.
      Production Zone	Select a zone for the primary site. The production zone is also called the primary zone. Make sure that the primary disks in the replication pairs that you want to add to the replication pair-consistent group reside in the selected zone.
      Disaster Recovery Region	Select a region for the secondary site. The disaster recovery region is also called the secondary region. Make sure that the secondary disks in the replication pairs that you want to add to the replication pair-consistent group reside in the selected region.
      Disaster Recovery Zone	Select a zone for the secondary site. The disaster recovery zone is also called the secondary zone. Make sure that the secondary disks in the replication pairs that you want to add to the replication pair-consistent group reside in the selected zone.
      RPO (Minutes)	The recovery point objective (RPO) of the replication pair-consistent group. This parameter is automatically set to 15 minutes and cannot be changed.

      Note

      After you create a replication pair-consistent group, you can click Modify in the Actions column that corresponds to the group to modify the name and description of the group.

5. Add multiple replication pairs to the replication pair-consistent group.

   When you add replication pairs to a replication pair-consistent group, take note of the following limits:

   • The replication pairs that you want to add to a replication pair-consistent group and the group must be in the Created or Stopped state.

   • The application pairs that you want to add to a replication pair-consistent group and the group must reside in the same production region, production zone, disaster recovery region, and disaster recovery zone.

   • You can add up to 17 replication pairs to a replication pair-consistent group.

   • After you add replication pairs to a replication pair-consistent group, you cannot separately perform activation, stop, failover, or reverse replication operations on the replication pairs. You can perform the preceding operations on the replication pair-consistent group to manage the replication pairs in a centralized manner.

   1. In the replication pair-consistent group list, find the replication pair-consistent group that you want to manage and click the group ID.

   2. On the details page of the replication pair-consistent group, click Add replication pair.

   3. In the Add Replication Pairs to the Replication Pair-consistent Group dialog box, select the replication pairs that you want to add and click Confirm.

6. Activate the replication pair-consistent group.

   1. In the replication pair-consistent group list, find the replication pair-consistent group that you want to activate and click Activate in the Actions column.

      After you activate the replication pair-consistent group, all replication pairs in the group are activated.

   2. Choose an activation method based on your business requirements.

      • One-time manual synchronization: Click Copy Data to immediately initiate a data replication. After the data replication is complete, the status of the replication pair-consistent group changes to Stopped. You can click Copy Data to initiate an immediate data replication based on your business requirements.

        Note

        To click Copy Data, the replication pair-consistent group must be in the Created, One-time Syncing, or Stopped state.

      • Automatic synchronization: Click Confirm to allow the system to automatically replicate data at 15-minute intervals.

        Note

        To click Confirm, the replication pair-consistent group must be in the Created, Syncing, Normal, or Stopped state.

      When the status of the replication pair-consistent group changes to Normal, the async replication feature is enabled and the initial synchronization of disk data is complete. Then, the system automatically replicates data from disks in the primary site to the disks in the secondary site at 15-minute intervals for geo-disaster recovery.