Abstract: A logical unit number management device includes: an access processing unit that performs information processing with access objects by using logical unit numbers for identifying logical identification information; a logical unit number management table storage unit that stores a logical unit number management table storing a corresponding relationship between the logical identification information and the logical unit numbers; a logical unit number management table changing unit that changes the corresponding relationship based on an external change request; a change completion reporting unit that reports change completion to the access processing unit when the logical unit number management table has been changed in accordance with the change request; and an access control unit that controls an access to the access object indicated by the logical identification information corresponding to one of the logical unit numbers after a report of the change completion.

Abstract: A logical unit number management device includes: an access processing unit that performs information processing with access objects by using logical unit numbers for identifying logical identification information; a logical unit number management table storage unit that stores a logical unit number management table storing a corresponding relationship between the logical identification information and the logical unit numbers; a logical unit number management table changing unit that changes the corresponding relationship based on an external change request; a change completion reporting unit that reports change completion to the access processing unit when the logical unit number management table has been changed in accordance with the change request; and an access control unit that controls an access to the access object indicated by the logical identification information corresponding to one of the logical unit numbers after a report of the change completion.

Abstract: In a solid oxide fuel cell comprising cylindrical cells according to the present invention, a coupling portion for connecting cell stacks in series in a non-linear state comprises flat portions which are connected to current collecting members at the end of the cell stacks and a rod portion which electrically connects the flat portions. With this, since electric current flows through the rod, the electric resistance in each series connection has no difference between each parallel cell, and thereby electric current flows uniformly through all the cells. Consequently, power generation can be conducted uniformly in each cell, the amount of electric power generation in the whole system can be increased, and the durability can be improved because the electric current is prevented from being localized.