Abstract:
In a storage device expandable through serially coupling two or more additional enclosures (20), each including a first additional controller (21) and a second additional controller (22), to a controller enclosure (10), including a first controller (11) and a second controller (12), a first route is formed by serially coupling the first controller (11) of the controller enclosure (10) to the first additional controllers (21) of the additional enclosures (20) in the order of adding the additional enclosures (20) and a second route is formed by serially coupling the second controller (12) of the controller enclosure (10) to the second additional controllers (22) of the additional enclosures (20) in an order different from that of adding the additional enclosures (20).