Abstract: A mass storage system includes data storage modules having fins extending therefrom and further includes an enclosure having guides for slidably receiving the fins of the data storage modules into the enclosure and for enabling a coupled position of the data storage modules within the enclosure. A generally contacting fit is formed between the fins and guides for conducting heat from the data storage modules to the enclosure when the modules are disposed in the coupled position within the enclosure. In a preferred embodiment, the data storage modules include high performance disk drives disposed within carrier housings. The guides act as rail guides for slidably receiving the modules into the enclosure and for enabling electrical connection between the disk drives and the enclosure in the coupled position. The guides and firs are formed to maximize surface area contact therebetween when the drives are in the coupled position.

Abstract: The present invention provides battery systems and methods of supplying electrical energy. According to one aspect of the present invention, a battery system includes a terminal adapted to be electrically coupled to a load; a battery including a plurality of working cells electrically coupled with the terminal; a spare cell; and a switching device configured to selectively electrically couple the spare cell with the terminal and arrange at least some of the working cells and the spare cell to provide electrical energy to the terminal.