Creating a HyperMetro Domain

Prerequisites

At least one remote device has been added to the storage system.

Context

• A HyperMetro domain is a collection of remote and local devices and a quorum server. Using a HyperMetro domain, you can determine the relationships among the local device, remote device, and quorum server (optional) in the domain.
• A remote device provides HyperMetro services in a HyperMetro domain. When initial synchronization is implemented for HyperMetro, the remote device serves as the standby end for initial data synchronization.
• If you select the quorum server mode, the local and remote devices and a quorum server form device relationships in a HyperMetro. You need to create a quorum server for the local device and remote device. The arbitration function provided by the quorum server determines which devices can be accessed by hosts during a HyperMetro failure.
• A quorum server is a quorum device configured for a HyperMetro domain. When a fault occurs on a device or link, the quorum server can provide arbitration services to determine which site continues to provide services. If a quorum service is not configured in a HyperMetro domain or a fault occurs, the preferred site continues to provide services by default. If a quorum server is configured in a HyperMetro domain and a fault occurs, the quorum server by default uses a series of arbitration measures to determine the root cause and decides which site continues to provide services.
• This operation is only performed on the local storage system.
• After creating a HyperMetro domain, you can create HyperMetro pairs or consistency groups in the domain.

Procedure

1. Choose Data Protection > Block Protection > HyperMetro Domain.
2. Click Create.

   The Create HyperMetro Domain page is displayed.

3. Set Name of the HyperMetro domain.
   

   • The name must be unique.
   • The name contains 1 to 31 characters.
   • The name can contain only letters, digits, underscores (_), hyphens (-), and periods (.), and must start with a letter or digit.

4. Select a quorum mode.
   • Quorum server
     1. In the Remote Device area, select a remote device that you want to add to the HyperMetro domain.
     2. In the Quorum Server area, select a quorum server that you want to add to the HyperMetro domain.
        

        If there is no quorum server in the system, choose Data Protection > Block Protection > Quorum Server to create a quorum server.

   • Static priority

     In the Remote Device area, select a remote device that you want to add to the HyperMetro domain.

     

     • You are advised to configure quorum servers.
     • If no quorum server is configured, when the preferred site is faulty, the non-preferred site cannot automatically take over HyperMetro services. As a result, the services stop and you need to forcibly start the non-preferred site to provide services for the host.
     • If you want to add the quorum server subsequently, modify the HyperMetro domain to add it.

5. Click OK.