stop time; downtime
Refers to the time during which a machine, system, or process is stopped, often for maintenance or due to a fault.
We need to minimize the system's downtime.
Stop time is scheduled for the machine for regular inspection.
Loanword from English 'downtime', often used in IT and business contexts. 停止時間 is the native Japanese equivalent and is more literal.
Antonym meaning 'operating time' or 'uptime'.
Compound of 停止 (ていし, 'stop, suspension') and 時間 (じかん, 'time').