交こう替たい装そう置ち

noun

alternate device

Computing term for a backup or secondary device that takes over when the primary one fails or is unavailable.

• システムは、主しゅ装そう置ちが故こ障しょうした場ば合あいに交こう替たい装そう置ちに自じ動どう的てきに切きり替かわる。

  The system automatically switches to the alternate device if the primary device fails.