Cognitive rotatable item storage with automated replenishment

An item storage system comprising:

• a shelving portion comprising:
• a first shelf that is rotatable about a center axis;
• a second shelf that is rotatable about the center axis and is spaced apart from the first shelf;
• and
• an actuator connected to the first shelf and the second shelf that is configured to rotate the first shelf and the second shelf;
• and
• a replenishment portion that is positioned adjacent to the shelving portion, the replenishment portion comprising:
• an elevator portion configured to deliver items to the first shelf and the second shelf;
• and
• a storing portion configured to load items into the elevator portion.

A method of operating an item storage system comprising a shelving portion with a toroidally-shaped shelf, a replenishment portion that is at least partially surrounded by the shelf, a controller, and a sensor connected to the controller, the method comprising:

• monitoring, by a sensor, items on the shelf;
• determining, by the controller, if there is an insufficient number of items positioned on the shelf;
• and
• causing, by the controller, the replenishment portion to add an additional item to the shelf by:
• moving the additional item from a storage portion to an elevator portion surrounded by the shelf;
• moving the additional item to a level of the shelf via the elevator portion;
• and
• moving the additional item from the elevator portion to the shelf.