Researching unmanaged workloads today..here’s a quick way to check if your datastore is managed by Storage I/O Control (SIOC):
Get-Datastore | Select-Object Name, Type, StorageIOControlEnabled
If you want to check VMhosts for SIOC events, like “An unmanaged I/O workload is detected on a SIOC-enabled datastore”:
Get-VMHost | Get-VIEvent | Where {$_.fullformattedmessage -like '*SIOC*'} | Select FullFormattedMessage, CreatedTime