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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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Changing the Properties of a Consistency Group

Changing the Properties of a Consistency Group

This operation enables you to change the name, description, recovery policy and rate of a consistency group.

Precaution

The properties of pairs in a consistency group will not be changed after the properties of a consistency group are modified, but the working properties change to the properties of the existing consistency group.

Procedure

  1. Go to the consistency group properties dialog box.
    1. On the right navigation bar, click .

      The data protection page is displayed.

    2. Click Remote Replication.
    3. Click the Remote Replication Consistency Group tab.

      The consistency group management page is displayed.

    4. Right-click the consistency group you want to modify and choose Properties.

      The Properties of Remote Replication Consistency Group dialog box is displayed.

  2. Change the properties of the consistency group. Table 4-24 describes the parameters of a consistency group.

    Table 4-24  Consistency group parameters

    Parameter

    Description

    Value

    Name

    Name of a consistency group.

    [Example]

    ConsistentGroup001

    Description

    Description of a consistency group.

    [Example]

    -

    Recovery policy

    A recovery policy supports the following recovery modes:
    • Manual: The remote replication pair enters the To be recovered state. Maintenance personnel must manually synchronize the data from the primary LUNs to the secondary LUNs in the consistency group.
    • Automatic: The remote replication pair enters the Synchronizing state. The system will automatically synchronize the incremental data from the primary LUNs to the secondary LUNs in the consistency group.

    [Example]

    Automatic

    Speed

    Speed of data synchronization between the primary and secondary LUNs. The value can be Low, Medium, High, or Highest.

    [Example]

    Medium

    Synchronization type

    Mode of data synchronization between the primary LUN and secondary LUN. The value can be Manual, Timed wait when synchronization begins, or Timed wait when synchronization ends.

    • Manual: The synchronization operation needs to be carried out manually.
    • Timed wait when synchronization begins: The system starts timing as soon as a synchronization begins. When the time specified in Interval has elapsed, the system starts to synchronize data again.
    • Timed wait when synchronization ends: The system starts timing as soon as a synchronization ends. When the time specified in Interval has elapsed, the system starts to synchronize data again.

    [Note]

    This parameter is available only when Replication Mode is set to Asynchronous.

    [Example]

    Manual

    Interval

    Time spent waiting of the two synchronization types, Timed wait when synchronization begins and Timed wait when synchronization ends.

    [Note]

    This parameter is available when Replication Mode is set to Asynchronous and Replication Type to Timed wait when synchronization begins or Timed wait when synchronization ends.

    [Value range]

    • An integer ranging from 1 to 1440 minutes.
    • An integer ranging from 10 to 59 seconds.

    [Example]

    50 minutes

    Enable the I/O timeout threshold for the secondary LUN

    If data is written into the primary LUN but fails to be written into the secondary LUN when the timeout period you set has elapsed, the remote replication pair enters the Interrupted status.

    [Note]

    This parameter is available only when Replication Mode is set to Synchronous.

    [Example]

    Enabled

    Timeout Threshold (second)

    The timeout for data written into the secondary LUN.

    [Note]

    This parameter is available only when Replication Mode is set to Synchronous.

    [Example]

    30

  3. Confirm the operation.
    1. Click OK.

      The Results message box is displayed, indicating that the operation succeeded.

    2. Click Close.
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Updated: 2019-01-28

Document ID: EDOC1000077758

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