When you enable Storage I/O Control, ESXi monitors datastore latency and throttles the I/O load if the datastore average latency exceeds the threshold.
Procedure
- Browse to the datastore in the vSphere Web Client navigator.
- Click the Configure tab.
- Click Settings and click General.
- Click Edit for Datastore Capabilities.
- Select the Enable Storage I/O Control check box.
- Click OK.
Results
Under Datastore Capabilities, Storage I/O Control is enabled for the datastore.