Checking the operating status of volumes in the performance graphs

Storage Advisor Embedded User Guide

Part Number

You can display and check the operating status of each volume with respect to IOPS, response time (time required to respond to a server request), and transfer rate. You can also download the content of each performance graph as a CSV file.

  1. In the dashboard or in the navigation bar, click Servers. If you are not using Storage Advisor Embedded to manage servers, click Volumes in the dashboard or in the navigation bar, and then skip to step 3.
  2. Click the server name to open the server details page.
  3. Click the volume name to open the volume details page.

    If the QoS settings are enabled for volumes, the items displayed in the volume details window and the Performance Monitor tab differ from those in normal times.

  4. On the Performance Monitor, check the operating status based on the graphs of IOPS, response time, and transfer rate.

    The volume details window includes the following information.

    • Volume overview

    • QoS settings information

      QoS information appears only when QoS settings are enabled.

      The occurrence time displayed in the QOS ALERT TIME tab is the time that the last alert was issued.

      • If you use the web-based user interface, the date and time when an alert was issued is displayed based on the time zone set for the management client system. If you use the REST API, the data and time are based on Coordinated Universal Time (UTC).

      • If you change the time zone of the storage system, the times displayed for alerts that were issued before the change are invalid.

    • Activity status performance graph

      When QoS settings for volumes enabled, the items displayed in the performance status graph are different from those normally displayed.

      The information displayed when QoS settings are enabled are as follows.

      Performance Monitor tab (IOPS)

      Displayed item



      Number of commands requested from the server


      Number of commands processed by the storage system

      Upper Limit

      Value specified for IOPS UPPER LIMIT

      Lower Limit

      Value specified for IOPS LOWER LIMIT

      Performance Monitor tab (Response Time)

      Displayed item


      Actual Time

      Time required to respond to a request from the server

      Target Time

      Value specified for TARGET RESPONSE TIME

      Performance Monitor tab (Transfer Rate)

      Displayed item



      Data transfer speed for commands requested from the server


      Actual data transfer speed with which the storage system processed the commands

      Upper Limit

      Value specified for TRANSFER RATE UPPER LIMIT

      Lower Limit

      Value specified for TRANSFER RATE LOWER LIMIT

      • I/O information between the server and the storage system is monitored, but I/O information between storage systems is not monitored.

      • The times displayed in performance graphs are the times when data was measured by the storage system, instead of the standard displayed times (times when data was acquired by the client).


    Performance reports might not show the current information if performance data is not obtained from the storage system. This issue should resolve itself after some time when the storage system is less busy.