I need to borrow a multi-volume set or one volume from a multi-volume set.
Although both services can accommodate multiple-volume-set requests, ILL is the better choice for ordering several volumes at one time. Place one ILL request and indicate in the "Notes" field which volumes you need. Borrow Direct allows one physical volume per request. If you need a volume other than the first, indicate the volume number in the "Notes for Librarian to Review" field of the Borrow Direct request form, otherwise the first volume will be sent by default. To request multiple volumes of the same set via Borrow Direct, submit separate Borrow Direct requests for each volume, noting in the "Notes for Librarian to Review" section of each request the volume number needed.