Similar to unit load AS/RS, except loads can be stored to greater depths in the storage rack
A rack-entry vehicle is used to carry loads into the racks from the S/R machine, and is controlled by the S/R machine
Termed an "automated item retrieval system" when used to automatically retrieve individual items or cases, with replenishment (storage) taking place manually from the rear of a flow-through storage lane and items are pushed forward with a rear-mounted pusher bar for automatic picking from the front of the storage lane