Creating a HyperMetro Consistency Group

If an application or one type of services requires multiple HyperMetro volumes and a preferable service site needs to be determined by the system or quorum server upon faults, you need to add HyperMetro pairs of the owning volumes of the application and services to a same HyperMetro consistency group for unified maintenance.

Prerequisites

Context

This operation is only performed on the local storage system.

Procedure

  1. Choose Data Protection > Protection Entity > Protection Group > HyperMetro Consistency Group.
  2. Click Create.

    The Create HyperMetro Consistency Group page is displayed.

  3. Set Name and HyperMetro Domain.

    1. In Name, set the name of the HyperMetro consistency group.
    2. In HyperMetro Domain, select the HyperMetro domain where the HyperMetro consistency group resides. The HyperMetro pairs in a HyperMetro consistency group must belong to the same HyperMetro domain.

  4. (Optional) Add a HyperMetro pair to the HyperMetro consistency group.

    • After a HyperMetro consistency group is created for the first time, its Running Status is Paused. In this case, you can only add the HyperMetro pair whose Running Status is Paused.
    • If you have not added HyperMetro pairs to the HyperMetro consistency group during its creation, you can add HyperMetro pairs by referring to Adding a HyperMetro Pair.
    1. Select Add HyperMetro Pair.
    2. In Available HyperMetro Pairs, select one or more HyperMetro pairs and click to add the selected objects to Selected HyperMetro Pairs.

  5. Click Advanced to set the advanced properties of the HyperMetro consistency group. Table 1 describes related parameters.

    Table 1 HyperMetro consistency group advanced parameters

    Parameter

    Description

    Speed

    Data synchronization speed of the HyperMetro consistency group. The value ranges from 1 MB/s to 1024 MB/s (or 1024 KB/s to 1,048,576 KB/s).

    • During initial synchronization, the recommended rate is 100 MB/s or higher.
    • During incremental synchronization, if the service is busy, the recommended rate is 0 MB/s to 20 MB/s.
    • During incremental synchronization, if the service load is heavy, the recommended rate is 20 MB/s to 70 MB/s.
    • During incremental synchronization, if the service is idle, the recommended rate is 100 MB/s or higher.
    • The default value is 32 MB/s.

    Recovery Policy

    Whether the system automatically synchronizes data after a HyperMetro fault is rectified. Possible options are Automatic and Manual. By default, the value is Automatic.

    • Automatic: The previous ongoing tasks automatically resume immediately after the remote replication fault is rectified.
    • Manual: The value of Running Status changes to To be synchronized after the remote replication fault is rectified. In this case, you can check the system and then determine whether to resume the previous ongoing tasks manually.

  6. Click OK.
Parent topic: Managing HyperMetro Consistency Groups