Think of storage as like a mini amazon warehouse. Machinery to move shelves around, automated crate fetching systems, bunch of digital equipment to organize it all, etc..
Exactly this. The storage isn't just a stack of boxes in a hole, it's a fully automated, climate controlled robotic system designed to work with standardized modular packaging. Even when it's not currently receiving anything, it's maintaining a steady temperature and humidity, and maybe doing some internal reshuffling to optimize retrieval times.