In the vSphere Client, the alarm Non-VI workload detected on the datastore is triggered when vCenter Server detects that a workload from a non-vSphere host might be affecting performance.

An anomaly might be detected for one of the following reasons.

The datastore is Storage I/O Control-enabled, but it cannot be fully controlled by Storage I/O Control because of the external workload. This can occur if the Storage I/O Control-enabled datastore is connected to an ESX/ESXi host that does not support Storage I/O Control. Ensure that all ESX/ESXi hosts that are connected to the datastore support Storage I/O Control.

The datastore is Storage I/O Control-enabled and one or more of the hosts to which the datastore connects is not managed by vCenter Server. Ensure that all hosts to which the datastore is connected are managed by vCenter Server.

The array is shared with non-vSphere workloads or the array is performing system tasks such as replication.

vCenter Server does not reduce the total amount of I/O sent to the array, but continues to enforce shares.

For more information on alarms, see the VMware vSphere Datacenter Administration Guide.