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Remote Replication Feature Guide for File 04

OceanStor 5300 V3, 5500 V3, 5600 V3, 5800 V3, and 6800 V3 Storage System V300R002

"This document describes the file system remote replication feature, in terms of the implementation principle,application scenario, and explains how to configure and manage this feature."
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Creating an Remote Replication

Creating an Remote Replication

Creating an asynchronous remote replication includes the following operations: configuring basic information about the remote replication, selecting a primary resource and a secondary resource, and setting remote replication properties. You can proceed as prompted.

Prerequisites

  • The remote replication license is valid.
  • The local and remote storage devices must support remote replication.
  • The remote storage device is added already, and secondary resource is created on the remote device.
  • The capacity of the primary file system must be the same as that of the secondary file system.
  • The status of primary and secondary resource is healthy.
  • The WORM properties of primary and secondary file systems are the same.
  • No data is in secondary resource.

Procedure

  1. Go to the Remote Replication management page.
    1. On the right navigation bar, click .

      The Data Protection page is displayed.

    2. In the Data Protection page, click Remote Replication.

      The Remote Replication page is displayed.

    3. Select Remote Replication tab.
  2. Select a remote replication mode.
    1. Click Create.

      The Create Remote Replication Wizard dialog box is displayed.

    2. On the Select Replication Mode page, select Asynchronous.

      NOTE:

      File system remote replication supports the asynchronous mode only.

    3. Click Next.

      The Specify Pair page is displayed.

  3. Select the primary resource and secondary resource to form a remote replication pair.
    1. In Select Primary Resource Type, select the desired resource type.
    2. In the Primary Resource area, select the primary resource.
    3. In the Secondary Resource area, select a remote device to which the primary resource is copied from the Remote Device drop-down list.
    4. In the Secondary Resource area, select the secondary resource.
    5. Click Add to Pairs. After the pair is added successfully, the specified pair will be displayed in Pairs.
    6. Click Next.

      The Set Properties page is displayed.

  4. Set properties of the remote replication pair.
    1. On the Set Properties page, set the remote replication parameters based on your service requirements.

      Table 3-8 describes parameters of remote replication.

      Table 3-8  Parameters of remote replication

      Parameter

      Description

      Value

      Speed

      Speed of remote replication.
      • Low: When the speed is set to low, remote replication will take a long time. This value is applicable to scenarios where the service load is relatively heavy.
      • Medium: When the speed is set to medium, remote replication will take relatively short period. This value is applicable to scenarios where the service load is heavy.
      • High: When the speed is set to high, remote replication will take a short period. This value is applicable to scenarios where the service load is relatively light.
      • Highest: When the speed is set to highest, remote replication will be complete in the shortest period. This value is applicable to scenarios where the service load is light.

      [Value range]

      Low, Medium, High, and Highest

      Recovery Policy

      A recovery policy determines whether the system automatically synchronizes data after a remote replication fault is rectified.

      • Automatic: The system automatically synchronizes data.
      • Manual: The synchronization operation must be performed manually.

      [Value range]

      Automatic and Manual

      Synchronization Method

      Mode of data synchronization between the primary resource and secondary resource.

      • Manual: Data must be manually synchronized between the primary resource and secondary resource.
      • Timed wait when synchronization begins: The system starts timing as soon as the latest synchronization begins. When the time specified in Interval has elapsed, the system automatically starts to synchronize data between the primary resource and secondary resource.
        NOTE:

        If the latest synchronization is still being executed after the time specified in Interval has elapsed, the data synchronization is not triggered.

      • Timed wait when synchronization ends: The system starts timing as soon as the latest synchronization ends. When the time specified in Interval has elapsed, the system automatically starts to synchronize data between the primary resource and secondary resource.
      • Specify the time policy: The system automatically synchronizes data between the primary file system and secondary file system based on a specified time policy.
        NOTE:

        Specify the time policy is only applied to file system.

      [Value range]

      • Manual
      • Timed wait when synchronization begins
      • Timed wait when synchronization ends
        NOTE:
        • An integer ranging from 5 to 1440 (inclusive), when minutes is used as the unit.
        • An integer ranging from 3 to 59 (inclusive), when seconds is used as the unit.
      • Specify the time policy
        • Hourly: Specifies when data synchronization begins in every hour. Its value is an integer ranging from 0 to 59.
        • Daily: Specifies when data synchronization begins in every day. Its value ranges from 00:00 to 23:59.
        • Weekly: Specifies when data synchronization begins in every week. Its value ranges from Monday to Sunday and 00:00 to 23:59.

      Initial Synchronization

      Mode of initial data synchronization between the primary resource and secondary resource.

      [Value range]

      • Data is inconsistent between the primary and secondary resources. After a remote replication task is created, the system automatically performs data synchronization.
      • Data is inconsistent between the primary and secondary resources. After a remote replication task is created, manually perform data synchronization.

    2. Click Next.
  5. Confirm the remote replication.
    1. Check the remote replication information. If correct, click Finish.

      The Danger dialog box is displayed.

    2. Read the content in the dialog box carefully, and select I have read and understood the consequences associated with performing this operation..
    3. Click OK.

      The Execution Result page is displayed.

    4. On Execution Result page, check whether remote replication pair is created successfully.
    5. Click Close.

      The remote replication pair displays detailed information in the remote replication list if successfully created.

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Updated: 2019-01-02

Document ID: EDOC1000069276

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