| 摘要 |
A connection scheme for connection from a host or the like to multiple storage devices via an optical link, and in particular to an optical connection scheme or an optical wiring scheme for realizing multiplexing/redundancy by utilizing branches of an optical link and the unidirectionality of the optical link. When a host or the like and multiple storage devices such as memories are optically connected via two or more optical couplers, a configuration is made in which a loop is provided between the two optical couplers by utilizing branches of the optical couplers and the unidirectionality of light. Accordingly, a configuration is adopted in which an IO controller makes a selection from among multiple operation modes.
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