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FusionStorage V100R006C30 Block Storage Service Disaster Recovery Feature Guide 03

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Creating a DR Cluster

Creating a DR Cluster

Scenarios

FusionStorage Block manages the HyperMetro service and remote replication through DR clusters.
  • You can deploy a maximum of 8 DR clusters in one FusionStorage Block system.
  • You can create a maximum of 2 HyperMetro domains in a DR cluster.

Perform operations described in the section in both the local and remote storage systems except for the remote device creation. Create the remote device only in the storage system at one site.

Prerequisites

  • You have installed the DR component, created the storage pool, and created the block storage clients and KV clients on all the DR nodes.
  • The replication network between the sites are connected, and the communication is normal.
  • You have logged in to FusionStorage Block Self-Maintenance Platform.

Procedure

    1. On FusionStorage Block Self-Maintenance Platform, choose DR Service > dr > DR Cluster.
    2. Click Create.
    3. Set the following parameters:

      • DR Cluster Name: Enter a string of 1 to 31 characters staring with a letter. The name can contain only letters, digits, and underscores (_).
      • Disk Type: Select the type of the disk for which the control cluster metadata (ZooKeeper) and service cluster metadata (CCDB) are to be deployed. For the space requirements of ZooKeeper and CCDB, see System Requirements.
        • Partition: If you select Partition for Disk Type, specify the names of the partitions used to deploy the ZooKeeper and CCDB.
        • Disk: If you select Disk for Disk Type, specify the type of disks used to deploy the ZooKeeper and CCDB.
      • Cluster Server: Select servers for the control cluster.
        • The control cluster supports three, five, or seven servers.
        • Specify the disks used to deploy the cluster metadata. If you select Batch Select, the disks that are in the same slots or partitions that have the same names on the servers are used to deploy ZooKeeper and CCDB. If you select Manual Select, you can specify any disks or partitions that meet the requirements on the servers to deploy ZooKeeper and CCDB.

        If more than half of the control nodes are faulty, the DR service will become unavailable.

    4. Click Next. The Create Service Cluster page is displayed.
    5. Select all the DR nodes to deploy the service cluster.

      The service cluster supports 3 to 64 servers.

    6. Click Next. The Add Cluster Authentication Credential page is displayed.
    7. Set the pre-shared key and pre-share key label for the cluster.

      The DR cluster performs cluster identity authentication through cluster authentication credentials. When creating a remote device, enter the authentication credential of the remote cluster.

      • Pre-shared Key Label: Marks the cluster pre-shared key. The field cannot be empty. It must be a string of 5 to 32 characters starting with a letter and can contain uppercase letters, lowercase letters, digits, and underscores (_).
      • Pre-shared Key: Used together with the pre-shared key label for identity authentication. The field cannot be empty. It must be a string of 8 to 31 characters and must contain special characters and two of the following types of characters: uppercase letters, lowercase letters, and digits. Identical characters cannot be used for three consecutive times. The pre-share key and pre-shared key label cannot be the same or in reverse order.

    8. Click Next. The Create Address Pool page is displayed.
    9. Set the following parameters for the address pool:

      • Address Pool Name: Enter a string of 1 to 31 characters staring with a letter. The name can contain only letters, digits, underscores (_), and hyphens (-) and cannot be left empty.
      • DR Network: Set the DR network segment by specifying the DR network IP address and subnet mask. When a network segment has multiple network ports, set the network port by specifying a port name.
      • Listening Port: Set it to the DR network port used for the communication between DR nodes. The value ranges from 12000 to 12100, and the default value is 12100.
      • Service Cluster Server: Select the servers to be added to the address pool.
        Normally, you only need to create one address pool and add all the service cluster servers to this pool.
        • When the HyperMetro or remote replication relationship needs to be established between one local DR cluster and two remote DR clusters and the local service cluster servers and DR networks used for the two remote DR clusters are totally different. Create two address pools and add the DR nodes to the two address pools based on the DR networks.
        • When the HyperMetro or remote replication relationship needs to be established between one local DR cluster and two remote DR clusters, the local service cluster servers used for the two remote DR clusters are the same, but the local DR networks used for the two remote DR clusters are different. Create two address pools and add the DR nodes to the two address pools based on the DR networks, respectively.

    10. Create DR clusters in the remote storage system. For details, see 1 to 9.

      After configuring the corresponding parameters, click Finish on the Create Address Pool page, and the creation ends after the address pool has been created.

    11. Click Next.

      The Create Remote Device page is displayed.

      Create the remote device only in the storage system at one site.

    12. Set the following parameters on the page:

      • Local Address Pool Name: Enter the name of the local address pool where links to the remote device are established.
      • Remote Address Pool ID: Enter the remote address pool ID obtained from the remote system. On the web client of the remote system, locate the row that contains the remote DR cluster, click to unfold the cluster details, and obtain the address pool ID under the Address Pool tab.
      • Initial IP Addresses: Set the IP addresses that will be used for the communication with the peer site for the first time. Choose an IP address from the local address pool and an IP address from the remote address pool, respectively.
      • Listening Port: Set it to the listening port of the peer address pool.
      • Verify Remote Cluster Authentication Credential
        • Pre-shared Key Label: Set it to the pre-shared key label of the remote cluster.
        • Pre-shared Key: Set it to the pre-shared key of the remote cluster.

      You need to create one remote device for each DR cluster only when the HyperMetro or remote replication relationship is established between one local DR cluster and two remote replication clusters.

    13. Click Finish.

      The DR cluster creation is complete.

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Updated: 2019-01-17

Document ID: EDOC1100044928

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