Every team in the NHL has a Reserve List. It is defined in the CBA very simply:
"Reserve List" means the list of all Players to whom a Club has rights including all Unsigned Draft Choices, all Players signed to an SPC (whether or not currently playing in the NHL), and all Players who have signed an SPC but who have subsequently been returned to Juniors. A Club may have on its Reserve List, at any one time, not more than 90 Players, which shall include the following:
(a) Not more than 50 Players signed to an SPC and not less than 24 Players and 3 goalkeepers under an SPC.