It is recommended to set Storage DRS to “Manual” in all cases so that migrations must be approved and the administrator is aware of the impact.
Deduplication
Storage DRS Automation Level: Manual Mode
Load Balancing: Space + I/O
Thin provisioning
Storage DRS Automation Level: Manual Mode
Load Balancing: Space + I/O
Replication
Storage DRS Automation Level: Manual Mode
Load Balancing: Space + I/O
Auto-tiering
Storage DRS Automation Level: Manual Mode
Load Balancing: I/O metric disabled