The DockStar network adapter also has three additional USB ports, allowing connection of up to four mass storage devices at a time, providing more to share and access whether you're across the room or on the other side of the world.
Both the Kingston and Seagate wireless storage devices offer multiple users to access the drive at the same time and even to view video content simultaneously, although WiFi connection speed and reliability will likely limit the actual ability to look at simultaneous video streams.
Aside from magnetic tape (which generally has a slower time to access information) there is no more cost effective storage device to keep all this content on than HDDs.
In a data warehouse, the main mode of access is a relational database storage paradigm, in which the structure of the data was predetermined at the time the database was designed.