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OceanStor 18500, 18800, and 18800F Storage System V100R001C30 Remote Replication Feature Guide 09

This document describes the remote replication feature, in terms of the implementation principle, application scenario, configuration process, and reference information.
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Configuration Operations

Configuration Operations

After completing the network and service plans, configure the remote replication feature on the DeviceManager according to the plans.

Prerequisites

  • The connection between the storage system and application server at each site is normal.
  • The iSCSI connection between the primary storage system at site A and the secondary storage system at site B is normal.

Procedure

  1. Check the license file.

    Remote replication is a value-added feature. Before configuring this feature, you must make sure that the license file of the storage system grants the permission for the remote replication feature.

    On the navigation bar of the DeviceManager of each storage system, click . Click More and then click Manage Licenses Files on the Viewing and Settings area. On the Activated License tab page, check that the permission for the remote replication feature is granted. If the license file does not grant the permission for the remote replication feature, search for License in Help Subject. Then follow the displayed instructions to import and activate the license file.

  2. Create a secondary LUN in the secondary storage system at site B.
    1. Create a disk domain in the secondary storage system at site B.

      On the navigation bar of the DeviceManager, click . And on the View and Management area, click Disk Domain to create DiskDomain_BK.


    2. Create a storage pool in the secondary storage system at site B.

      This step is fundamental for subsequent storage space configuration. A storage pool is a container, in which multiple LUNs can be created.

      On the navigation bar of the DeviceManager, click . And on the View and Management area, click Storage Pool to create StoragePool_BK.


    3. Create the secondary LUN in the storage pool.

      Storage pool cannot be identified by hosts. The host can use the storage space only when the storage space of the storage pool is divided into LUNs.

      On the navigation bar of the DeviceManager, click . And on the View and Management area, click LUN to create a secondary LUN. The secondary LUN must have the same capacity as the primary LUN (500 GB). Otherwise the system cannot detect the created secondary LUN when you adding a secondary LUN.


  3. Set up a logical connection between sites A and B.
    1. Configure host port IP addresses.

      This step is fundamental for setting up a logical connection between the two storage systems. The following uses port P0 on the primary storage system at site A as an example to describe how to configure a port IP address. The procedure for any other host port on either site is the same.

      On the navigation bar of the DeviceManager, click . Click the device graph in the Basic Information area to go to the System page, and choose Cabinet SMB0. Click , and choose the controller. Click the host port of which the IP address need to be modified in the displayed controller device view. Then click Modify and configure the IP address for the host port in the iSCSI Host Port dialog box.


    2. Add routes for iSCSI host ports of both the primary and secondary storage systems.

      Perform this step when the host port on the primary storage system and that on the secondary storage system use IP addresses in different network segments. If the host ports use IP addresses in the same network segment, skip this step. The following uses the primary storage system at site A as an example to describe how to add a route for a host port. The procedure at site B is the same.

      After modifying host port IP address, select the host port need to add routes under the device view. Then click Route Management, and choose Add in the displayed diagnose box to add route information.


    3. Add a remote device in either the primary storage system at site A or the secondary storage system at site B.

      Add a remote device at one side to establish an usable link between two storage systems. The following uses the primary storage system at site A as an example to describe how to add a remote device. The procedure for the secondary storage system at site B is the same.

      On the navigation bar of the DeviceManager, click , and click Remote Device. Choose Add to add a remote device following the Wizard for Adding Remote Device dialog box.


  4. Create an asynchronous remote replication.

    The created asynchronous remote replication session is used to implement remote data replication.

    On the navigation bar of the DeviceManager, click , and click Remote Replication. Choose Create to create RP_001 following the Wizard for Creating Remote Replication dialog box.


    The following shows the properties of the asynchronous remote replication.


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Updated: 2019-01-28

Document ID: EDOC1000077758

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