You can use the Virtual SAN VM performance charts to monitor the workload on your virtual machines and virtual disks.
When the performance service is turned on, you can view detailed statistical charts for virtual machine performance and virtual disk performance. VM performance statistics cannot be collected during migration between hosts, so you might notice a gap of several minutes in the VM performance chart.
Note: The performance service supports only virtual SCSI controllers for virtual disks. Virtual disks using other controllers, such as IDE, are not supported.
Prerequisites
The Virtual SAN performance service must be turned on before you can view performance charts.