This document summarizes the features of a high density storage carousel system. It provides up to 80% additional storage capacity within a minimal footprint by utilizing unused vertical space. It increases productivity by quickly and accurately retrieving the correct parts or tools. Safety features include carriers attached to a internally housed drive system, safety barriers at access openings, and payloads of up to 500kg. The system provides multiple access openings up to 12 meters in height and an ergonomic retrieval counter to prevent injuries. Access can be secured by password or RFID and doors lock for anti-theft protection. An emergency hand crank allows access during power failures.