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Administrator Guide 15

OceanStor 5300 V3, 5500 V3, 5600 V3, 5800 V3, and 6800 V3 Storage System V300R003

Routine maintenance activities are the most common activities for the storage device, including powering on or off the storage device, managing users, modifying basic parameters of the storage device, and managing hardware components. This document applies to the system administrators who are responsible for carrying out routine maintenance activities, monitoring the storage device, and rectifying common device faults.
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Checking Consistency Groups

Checking Consistency Groups

A consistency group centrally manages remote replication tasks so that multiple replication pairs can be synchronized or split in a batch. You can learn about the health and running status of a consistency group by checking its status information.

Impact on the System

  • If a consistency group is disabled due to one or more faulty replication pairs, the remote replication services carried by those pairs are interrupted and data loss occurs.
  • If a consistency group is disabled due to a permanently disconnected link between two disk arrays, delete the consistency group.

Prerequisites

A license file is required for enabling the consistency group function.

Reference Standard

If consistency groups are working properly, the following items are true on the DeviceManager:
  • All of the consistency groups are in the Normal health status and Normal running status.
  • No consistency group alarm appears on the Current Alarms tab page.

Precaution

The running status of a consistency group is the same as Pair Running Status of the remote replications added to the consistency group. Only remote replications whose Pair Running Status is Split can be added to a consistency group. When the status of any of the remote replication members contained in a consistency group changes, the status of the remaining members also changes accordingly.

Procedure

  1. On the navigation bar of the DeviceManager, click .
  2. In the function pane, click Remote Replication.

    The Remote Replication page is displayed.

  3. On the Consistency Group tab, view the information about the desired consistency group.

    Table 9-29 describes associated status parameters.

    Table 9-29  Consistency group status parameters and their meanings

    Parameter

    Definition

    Health Status

    Health status of a consistency group. The value can be:
    • Normal: The functionality and operating performance of the consistency group are normal.
    • Fault: One or more replication pairs for the consistency group are abnormal.

    Running Status

    Running status of a consistency group. The value can be Normal, Synchronizing, To be recovered, Interrupted, Split, or Invalid.

Exception Handling

If a consistency group alarm appears on the Current Alarms tab page, select the alarm and diagnose the problem according to its details and repair suggestions.

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Updated: 2019-04-17

Document ID: EDOC1000084191

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