noun
automatic switchover; automatic cutover
Computing term for a system that automatically changes to a backup or alternative resource, often in failover or redundancy contexts.
サーバーに障害が発生すると、自動切り替え機能が作動します。
When a server failure occurs, the automatic switchover function activates.
このシステムは電源の自動切り替えに対応している。
This system supports automatic power source cutover.
切り替え is the general noun for switching or changeover; 自動切り替え specifies that the switching happens automatically, often in technical contexts.
Compound of 自動 (automatic) and 切り替え (switching, changeover).