also: サーバおち
noun
server outage; server crash; server failure
IT term for when a server becomes unavailable due to crash, overload, or network issues.
アクセスが集中してサーバー落ちした。
The server went down due to a surge in traffic.
サーバー落ちの原因を調査中です。
We are investigating the cause of the server outage.
Compound of サーバー (server) and 落ち (falling, going down), from the verb 落ちる (to fall, to go down).