subsystem
Part within whole
A subsystem is a component system within a larger system—a self-contained unit that performs a specific function as part of a whole.
A spacecraft has subsystems for propulsion, navigation, and life support.
Software architecture divides into subsystems handling different tasks.
The cooling subsystem failed, causing the entire machine to overheat.
Independent functional component
- unitIndividual part or measure
- partPiece of whole
- elementBasic substance or factor
- sectionDistinct divided part
piece · constituent · mechanism · device · hardware · assembly · circuit · processor
Stored duplicate for recovery
- secondaryLesser in rank
- reserveSupply kept back
- standbyReady substitute awaiting use
- redundantExceeding what's needed
supplementary · ancillary · peripheral · fallback · emergency · failover · spare · parallel
Set firmly within something
- interconnectedJoined in multiple ways
- interfacedConnected for communication
- synchronizedOccurring at the same time
- coordinatedArranged to work together
unified · seamless · coupled · linked · networked · modular · layered · nested
Preserving working condition
- reliabilityConsistent, predictable performance
- diagnosticsMethods identifying problems
- troubleshootingSystematic fault diagnosis
- monitoringOngoing observation of something
performance · functionality · optimization · scalability · compatibility · resilience · redundancy · fault-tolerance
module
Independent functional component
section · piece · constituent · mechanism · device · hardware · assembly · circuit · processor · controller
backup
Stored duplicate for recovery
redundant · supplementary · ancillary · peripheral · fallback · emergency · failover · spare · parallel · mirrored
embedded
Set firmly within something
- interconnectedJoined in multiple ways
- interfacedConnected for communication
- synchronizedOccurring at the same time
coordinated · unified · seamless · coupled · linked · networked · modular · layered · nested · hierarchical
maintenance
Preserving working condition
- reliabilityConsistent, predictable performance
- diagnosticsMethods identifying problems
- troubleshootingSystematic fault diagnosis
monitoring · performance · functionality · optimization · scalability · compatibility · resilience · redundancy · fault-tolerance · calibration
- modular partsmodule, component, unit, part, piece
- system componentsmodule, component, unit, controller, processor
- block diagramsblack box, input, output, feedback loop
- Mainframesmainframe, COBOL, batch processing, Big Blue, IBM
- software architecturemicroservices, monolithic, layered, three-tier, two-tier
- software modelinguse case, flowchart, data model, design pattern, abstraction