noun
preventive maintenance
Technical term used in computing and engineering for scheduled maintenance to prevent failures.
サーバーの予防保全は毎月行っている。
We perform preventive maintenance on the server every month.
保守 is general maintenance, while 予防保全 specifically refers to proactive, scheduled maintenance to avoid breakdowns.
Compound of 予防 (prevention) and 保全 (maintenance, preservation).