noun
system failure; system crash
Wasei-eigo computing term for a system going down or crashing; used for servers, networks, and software.
wasei-eigo (Japanese-coined English), from system down
サーバーがシステムダウンして、サイトにアクセスできなくなった。
The server went down and the site became inaccessible.
システムダウンの
We are investigating the cause of the system failure.