Space reclamation priority defines how blocks deleted from a VMFS6 datastores are reclaimed on a LUN backing the datastore. By default, the LUN performs the space reclamation operation at a low rate. You can modify the default setting to disable the operation for the datastore.


  1. Browse to the datastore in the vSphere Web Client navigator.
  2. Select Edit Space Reclamation from the right-click menu.
  3. Modify the space reclamation setting.




    Select this option if you want to disable the space reclamation operations for the datastore.

    Low (default)

    Reclaim space at a low rate.

  4. Click OK to save the new settings.


The modified value for the space reclamation priority appears on the General page for the datastore.