The VMware Device Datastore IOPS report reveals the average count of raw I/O operations per second (IOPS) for a virtual machine This report is helpful for diagnosing read and write efficiency and in some cases memory exhaustion.

High IOPS metrics can indicate virtual memory usage where RAM needs exceed allocation. Use this report together with the VM Memory Utilization and Disk Activity report.

Understand column data

The default view of each report contains a grid with the following columns:

  • Disk. Disk name (index in parenthesis).
  • Poll Time. Date and time of last poll.
  • Average Read Requests per Second. Average disk operations per second.
  • Average Write Requests per Second. Average disk operations per second.

    Generate a report

    Choose Device. Choose one or more host devices for which you want information.

    Choose time constraints. (,) Choose times. (For recently observed measurements, select Last Polled from the Date Range drop down list.)

    Chart, adjust output, and visualize. Fine tune report presentation and range of values displayed using the Report Settings dialog (optional).

Note: This report only returns VMware Device Datastore IOPS metrics for virtual machines when host machines have the appropriate VMware credentials. For more information, see Using Credentials.

  • Export report data

    Report data can be exported from WhatsUp Gold, reused, and distributed in multiple formats. Select Expand () from the Dashboard Options () menu. After the report has been expanded, select the Export Data icon to access the following options:

    • HTML. Generate and download a .htm file presenting your report data as it appears in the WhatsUp Gold user interface.
    • Excel. Generate and download a .xml spreadsheet containing your report data.
    • CSV. Generate and download a .csv file containing your report data.
    • Text. Generate and download a .txt file containing your report data.
    • Schedule Export. Set a recurring date and time, format, and email destination for report data export.