Virtual Machines Disk Activity report reveals disk I/O performance statistics. This report is helpful for diagnosing read and write latency.

Slow read and write speeds can be indicators of VM memory exhaustion. Use this report together with the VM Memory Utilization report.

Understand column data

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

  • Virtual Machine. Device name/CPU type (CPU index in parenthesis).
  • Read: 1 Hour Avg. Average disk read rate.
  • Read: 1 Hour Max. Peak disk read rate observed in last hour.
  • Read: Hour Current. Last observed disk read rate.
  • Write: 1 Hour Avg. Average disk write rate.
  • Write: 1 Hour Max. Peak disk write rate observed in last hour.
  • Write: Hour Current. Last observed disk write rate.
  • Poll Time. Date and time of last poll.

Generate a report

Choose Device. Choose one or more host devices.

Sort and pick columns. Sort and pick columns.

Rename Report. Edit report name using the Report Settings dialog.

Hyper-V Considerations

To return each Hyper-V virtual machine's metrics in this report, Virtual Machines Disk Activity monitoring needs to be switched on in the virtual machine's monitor setup tab found on the Device Properties interface (). For more information, see Hyper-V Disk Activity Monitor.

  • 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.