Disk Performance Not Showing in Task Manager on Windows Server

Learn how to fix disk performance not showing in task manager by re-enabling it in the command prompt or by using the resource monitor.

Disk metrics are beneficial to diagnose performance issues on a server, so why can you visualize the CPU, Memory, and Ethernet usage in Task Manager on Windows Server, but the disk performance is not showing?

The Disk Usage was removed from the Performance tab starting from Windows Server 2012R2 due to the large number of computing resources required to track the usage of each disk in a computer network.

However, two ways are still left to check disk usage data on Windows Server. The first is to enable it to show on Task Manager through the Command Prompt, and the second is through the Resource Monitor.

(If you are curious about why your Apps & Features disk space doesn’t add up in Settings > Storage, I’ve written an article about it.)


Method 1: How to Show Disk Performance in Task Manager

Due to the importance of having such metrics available, Microsoft didn’t altogether remove it from Windows Server, leaving a way for users to re-enable disk performance in the Task Manager like in this picture below:

To have your disk usage data on Task Manager:

  1. Close Task Manager if it is open.
  2. Open the Command Prompt as Administrator.
  3. Enter the following command on Command Prompt:
    diskperf -y

Now check if the data is available in Task Manager.

Since having the disk metrics available on Task Manager might affect Windows Server, as explained at the beginning of this article, you should disable it again later on.


How to Disable Disk Performance in Task Manager

The process is the same as the one above; we only need to input a different command in cmd:

  1. Close Task Manager if it is open.
  2. Open the Command Prompt as Administrator.
  3. Enter the following command on Command Prompt:
    diskperf -n


Method 2: How to See Disk Usage in Resource Monitor

The Resource Monitor is an effective tool to visualize your server’s resource usage, including disk usage, in real-time. Thus, it can be used as an alternative to monitoring disk metrics without needing to re-enable it on Task Manager.

To check disk usage data on Resource Monitor:

  1. Open Server Manager on the Start Menu.
  2. Click on the Tools tab on the right-upper corner.
  3. Select Resource Monitor.
  4. On the Resource Monitor windows, select the Disk tab.

While not as convenient as showing the disk usage right away on the Task Manager, this method keeps the Task Manager free of having to track Data metrics, freeing up some computing resources.

A more customized alternative to check disk usage is to do it through Server Manager > Tools > Performance Monitor.

(If you are having issues with Windows Event Log using up too much disk on the task manager, check my article on that.)

You can check a tutorial on how to use the Performance Monitor in the video below:


Conclusion

Since Windows Server 2012R2, it is not possible anymore to visualize disk usage in the Task Manager by default. However, there are two methods to check disk usage on Windows Server.

Method one is to enable disk performance again in Task Manager by entering the command diskperf -y in the Command Prompt or PowerShell.

The second method is to check disk metrics by going to the Resource Monitor on Server Manager > Tools.

To know more about the Task Manager, check my articles articles on task manager controls you should know, and what the number in parentheses means in task manager.

Laerthe Côrtes

Laerthe Côrtes

My first desktop computer, back in the 1990s, opened a whole new world for me; since then I am a heavy PC user (who will never get used to smartphones.) I worked for five years in the PC software industry, and my favorite version of Windows is still Windows 95.

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