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SmartQoS Feature Guide for File

OceanStor Dorado V3 Series V300R002

This document is applicable to OceanStor Dorado5000 V3, Dorado6000 V3, and Dorado18000 V3. It describes the implementation principles and application scenarios of the SmartQoS (for file) feature, and explains how to configure and manage SmartQoS.
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Monitoring Application Performance

Monitoring Application Performance

The storage system's built-in performance monitoring function provides visibility into object performance. This function helps you know the service level agreement (SLA) requirement of each application and adjust the performance goals of SmartQoS accordingly, thereby ensuring performance of critical services.


  1. Enable and set performance monitoring.

    1. Choose Settings > Monitor Settings.
    2. Select Parameter Settings and set performance monitoring parameters, as follows:

      If Status of performance monitoring is Enabled, click Disabled before you set the following parameters.

      • In Sampling Interval of Real-Time Statistics Collection (s), set the interval for sampling performance data.
      • In Sampling Interval of Historical Statistics Collection (s), set the duration of performance monitoring.
      • Select Save monitoring data on the device.
    3. Click Enabled to enable performance monitoring.

      The Execution Result dialog box is displayed.

    4. Click Close.

      Status of the performance monitoring function changes to Enabled.

  2. Monitor file system service performance.

    1. Choose Monitor > Performance Monitoring.
    2. On the Performance Monitoring page, set the objects that you want to monitor.
      1. In the Object Type list of the Monitored Object area, choose File system.
      2. Select the file systems that you want to monitor.

        The data of an application resides on one or more file systems. To monitor the performance of an application, you are advised to choose the file systems that store the data of the specific application in this step.

      3. In the Statistical Indicators area, select the statistical indicators that you want to monitor.
        You are advised to select Read bandwidth, Write bandwidth, Read OPS, and Write OPS. The selected objects are displayed on the right pane.

        On the left upper corner of the Performance Monitoring page, you can double-click to view all performance statistics of a specific object on one chart or double-click to view performance statistics on respective charts.


By monitoring file system performance, you can see how each application occupies storage system resources. Based on the monitoring result, you can then judge whether the performance of an application at the current time or during a certain period is lower or higher than the preset performance goal.

  • If the performance is lower than the goal, you can use SmartQoS to limit the performance of other applications.
  • If the performance is higher than the goal, you can use SmartQoS to limit the performance of this application.
Updated: 2019-02-22

Document ID: EDOC1100067330

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