4 ms·

Robocopy uses /mt 8 by default.

• huhtenberg 5y ago
  That's, if /mt is specified without a thread count, the count will default to 8. Without the switch it will run single-threaded.
• patmorgan23 5y ago
  /MT defaults to 8 threads (can be between 2 and 128 threads) but /MT is not on by default.