Storage I/O Control is disabled on a datastore and cannot be enabled.

Problem

You cannot enable Storage I/O Control on a datastore.

Cause

The following reasons might prevent you from enabling Storage I/O Control on a datastore.
  • At least one host that is connected to the datastore is not running ESX/ESXi 4.1 or later.
  • You do not have the appropriate license to enable Storage I/O Control.

Solution

  • Verify that the hosts connected to the datastore are ESX/ESXi 4.1 or later.
  • Verify that you have the appropriate license to enable Storage I/O Control.