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    File Storage NAS:View NAS Performance Monitoring Data

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    File Storage NAS:View NAS Performance Monitoring Data

    Last Updated:Feb 27, 2026

    File Storage NAS integrates seamlessly with Cloud Monitor. You can use the performance monitoring feature to view real-time performance metrics for your file systems, such as IOPS, throughput, and latency. This topic describes how to view performance monitoring data for NAS file systems.

    Prerequisites

    View in the file storage console

    1. Log on to the NAS console.

    2. In the navigation pane on the left, choose Monitoring and auditing > Performance monitoring.

    3. In the top navigation bar, select the resource group and region where your file system resides.image

    4. On the Performance monitoring page, complete the following steps to view the performance monitoring details of a specific file system.

      1. From the File system type drop-down list, select the type of your target file system.

      2. From the File system ID drop-down list, select the ID of your target file system.

      3. Select a time range for the query: 1 hour, 1 day, 7 days, 14 days, This month, or Last month. Or, enter a custom date range in the Custom time field. The date range cannot exceed 30 days.

      The File system performance monitoring page displays monitoring charts for three key metrics: IOPS, throughput, and latency.

      image

      The File system metadata performance monitoring page displays monitoring charts for metadata metrics.

      image

      Note

      • If a chart shows No data, the target file system has not received requests from clients or the required service is not enabled.

      • You can use the FIO tool to test file system performance and view the resulting metrics in the Cloud Monitor console. For more information, see NAS Performance Testing.

        For example, to test write throughput, run the following command on an ECS instance where the NAS file system is mounted to the /mnt directory: fio -numjobs=1 -iodepth=128 -direct=1 -ioengine=libaio -sync=1 -rw=randwrite -bs=1M -size=1G -time_based -runtime=600 -name=Fio -directory=/mnt.

      • IOPS and metadata QPS values are integers. If fewer than 60 related requests occur within one minute, the monitoring value is displayed as 0.

    View performance monitoring data in the Cloud Monitor console

    1. Log on to the Cloud Monitor console.

    2. In the navigation pane on the left, choose Cloud resource monitoring > Cloud service monitoring.

    3. On the Cloud service monitoring page, enter NAS and click File Storage NAS.

    4. On the File Storage NAS page, select a region and then click your target file system or click Monitoring chart in the Actions column.

    5. On the monitoring chart details page, click the File system monitoring tab to view the performance monitoring details of your target file system.

      By default, Cloud Monitor displays monitoring data for the last hour. You can click a preset time range or enter a custom date range. The date range cannot exceed 30 days.

    View performance monitoring data using Cloud Monitor API operations

    You can query NAS monitoring data using the Cloud Monitor API. The following operations are supported:

    • DescribeMetricMetaList: Queries descriptions of time-series metrics exposed by Cloud Monitor.

    • DescribeMetricList: Queries time-series metric data for Alibaba Cloud services within a specified time range.

    • DescribeMetricLast: Queries the latest monitoring data for a specified monitored object.

    The following table lists the request parameters for NAS.

    Name

    Description

    Namespace

    The namespace for cloud service metrics. For NAS, the value is acs_nas.

    MetricName

    The name of the monitoring metric. Valid values:

    • IopsRead

    • IopsWrite

    • LatencyRead

    • LatencyWrite

    • QpsMeta

    • ThruputRead

    • ThruputWrite

    Dimensions

    A map of dimensions used to query monitoring data for a specific resource.

    Format: {"userId":"xxxxxx","fileSystemId":"xxxxx"}

    Note

    Pass this map as a JSON string. The order of keys must be preserved.

    Related operations

    • Create alert rules to receive notifications when abnormal data is detected. This helps technical staff promptly respond to and resolve issues to restore business operations. For more information, see Configure basic alert rules.

    • Create application groups to manage multiple file systems together. This simplifies alert rule management and viewing monitoring data. For more information, see Create an application group.

    • Use the FIO tool to test file system throughput and IOPS. For more information, see NAS Performance Testing.

    Related Questions

    For more questions about NAS performance, see Performance FAQ.