Help Center > > User Guide> Managing Protected Instances> Creating a Replication Pair

Creating a Replication Pair

Updated at: May 20, 2019 GMT+08:00

Scenarios

You can create replication pairs for desired disks and add the replication pairs to a specified protection group. When you create a replication pair:

  • If the protection group is in the Available state, protection is disabled. The production site disk and DR site disk have formed a replication pair, but data synchronization is not started. To start data synchronization, enable protection.
  • If the protection group is in the Protecting state, protection is enabled. After you create a replication pair, data synchronization is automatically started.
NOTE:

After a replication pair is created, the default name of the DR site disk is the same as the name of the production site disk, but their IDs are different.

To modify a disk name, click the disk name on the replication pair details page to switch to the replication pair details page and modify it.

Prerequisites

  • The protection group is in the Available or Protecting state.
  • The disks used to create the replication pair are in the Available state.

Procedure

  1. Log in to the management console.
  2. Click Service List and choose Storage > Storage Disaster Recovery Service.

    The Storage Disaster Recovery Service page is displayed.

  3. In the pane of the protection group for which replication pairs are to be added, click Replication Pairs.

    The operation page for the protection group is displayed.

  4. On the Replication Pairs tab, click Create Replication Pair.

    The Create Replication Pair page is displayed.

  5. Configure the basic information about the replication pair listed in Table 1.

    Table 1 Parameter description

    Parameter

    Description

    Example Value

    Protection Group Name

    Indicates the name of the protection group to which the replication pair to be created belongs. You do not need to configure it.

    None

    Protection Group ID

    Specifies the ID of a protection group.

    None

    DR Direction

    Indicates the replication direction of the protection group to which the replication pair to be created belongs. You do not need to configure it.

    None

    Production Site

    Specifies the AZ of the production site.

    None

    Production Site Disk

    This parameter is mandatory.

    The following two options are available:
    • EVS
    • DSS

    EVS

    DR Site Disk

    This parameter is mandatory.

    The following two options are available:
    • EVS
    • DSS
    NOTE:

    Disks are classified as EVS and DSS disks based on whether the storage resources used by the disks are exclusive. DSS disks are provided for users exclusively.

    Determine whether to use DSS disks for the DR site as required. The disks at the production and DR site do not need to be of the same type.

    EVS

    Storage Pool

    • If you select EVS for DR Site Disk, Storage Pool is not required.
    • If you select DSS for DR Site Disk, Storage Pool is mandatory.

    None

    Replication Pair Name

    Indicates the replication pair name. This parameter is mandatory.

    Configure this parameter when you create a replication pair. Then, you can use this name to classify and search this replication pair.

    replication_001

    NOTE:

    DR Site Disk and Storage Pool are available only when DSS is enabled.

  6. Click Create Now.
  7. On the Confirm page, you can confirm the replication pair information.

    • If you do not need to modify the information, click Submit.
    • If you need to modify the information, click Previous.

  8. Click Back to Protection Group Details Page and query the replication pairs of the protection group.

    If the replication pair status changes to Available, the replication pair has been created successfully.

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