managed system
Computing term for a system that is under management, often in contrast to a managing system. The gloss 'open' may refer to a specific context like an open system under management.
Monitor the status of the managed system.
Compound of 被 (hi, 'receiving' or 'passive') + 管理 (kanri, 'management') + システム (shisutemu, 'system'). The prefix 被- indicates the system is the object of management.