With memory reliability, VMkernel stops using pages that receive an error isolation notification.

The user receives an event in the vSphere Client when VMkernel recovers from an uncorrectable memory error, when VMkernel retires a significant percentage of system memory due to a large number of correctable errors, or if there are a large number of pages that are unable to retire.


  1. Vacate the host.
  2. Migrate the virtual machines.
  3. Run memory related hardware tests.