I/O Insight performance metrics chart displays the metrics at the virtual disk level.

When I/O Insight is running, vSAN collects and displays the metrics for selected VMs, for a set duration. You can view the performance metrics for up to 90 days. The I/O Insight instances are automatically deleted after this period.


  1. Navigate to the vSAN cluster or host.
    You can also access I/O Insight from the VM. Select the VM and navigate to Monitor > vSAN > Performance > Virtual Disks.
  2. Click the Monitor tab.
  3. Under vSAN, select Performance.
  4. Select the I/O Insight tab. You can organize the instances based on time or hosts.
  5. To view the metrics of an instance, click More options and click View Metrics. You can optionally stop a running instance before completing the specified duration.
    vSAN I/O Insight displays the metrics for the selected VM.
    You can rerun an instance, and rename or delete the existing instances.