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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 Verification

Configuration Verification

After configuring the remote replication feature, view the data status of the secondary LUN of the remote replication session to check whether data replication from the primary LUN to the secondary LUN succeeded.

Prerequisites

  • The connection between the storage system and application server at site A and that at site B are normal. The primary and secondary LUNs have been mapped to hosts.
  • Initial synchronization of the asynchronous remote replication session is complete.

Procedure

  1. Map the primary and secondary LUNs to the hosts.
    1. Log in to DeviceManager, and choose > LUN > LUN Group. Click Create to create LUN groups. Then add primary and secondary LUNs to corresponding LUN group.
    2. Choose > Mapping View, and choose the mapping view that the host group which holds the application servers belongs to.Then add the newly created LUN group to this mapping view.
  2. Check whether data replication succeeded.
    1. Log in to application server 1 at site A and write data block X to the primary LUN.
    2. Wait 10 to 20 minutes. Then log in to the standby server at the secondary site to check whether data block X is on the secondary LUN.

      • If yes, data replication succeeded.
      • If no, log in to the DeviceManager at site A, click on the navigation bar, and click Remote Replication. Click the remote replication, and choose More > Synchronize to synchronize data manually.

  3. Check whether site B can take over services.
    1. Log in to the DeviceManager at site B, click on the navigation bar, and click Remote Replication. Click the remote replication, and choose More > Switch Over Primary/Secondary to switch the secondary LUN to the primary LUN.
    2. Log in to the standby server at site B, copy data block X to another disk and write data block Y to the new primary LUN (previous secondary LUN) to check whether the LUN is accessible.

      • If yes, the secondary site can take over services.
      • If no, the secondary site cannot take over services.

  4. Check whether data can be recovered.
    1. Log in to the DeviceManager at site B, click on the navigation bar, and click Remote Replication. Click the remote replication, and choose More > Synchronize to synchronize data manually.
    2. After the synchronization is complete, log in to application server 1 at site A to check whether data block Y is on the secondary LUN (after the primary/secondary switchover).

      • If yes, data can be recovered.
      • If no, data cannot be recovered.

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Updated: 2019-01-28

Document ID: EDOC1000077758

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