IOInsight performance metrics chart displays the metrics at the virtual disk level.

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


  1. Navigate to the vSAN cluster or host.
    You can also access IOInsight 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 IOInsight 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.
    You can rerun an instance, and rename or delete the existing instances.