By default, DRS works at the Fully automated automation level. You can, however, choose to set it to Manual or Partially automated. Although the names of the automation levels are self-explanatory, there are a few additional differences:
- Manual: This displays the initial placement and the migration recommendations to the administrator; it requires the administrator's approval to be applied
- Partially automated: This carries out VM initial placements automatically, but migration recommendations are displayed to the administrator and are not performed until the administrator applies them
- Fully automated: This automatically carries out VM initial placements and migrations
