In a storage warehouse, products come and go all the time. A big difference between a storage company and a production plant is that the storage company does not care about the exact products they have but the amount of space they require for storage. The business is selling storage handling, storage space, and transportation.
For our application, we'll assume that our warehouse has a receipt and a shipping region, an 'in between' staging region and a bulk storage region.
If we simplify the warehouse it might look like this floor plan: