hooldatavus

Hooldatavus is a property of a system that describes how easily it can be maintained over its life cycle, including diagnosing faults, repairing, updating, and upgrading. It covers software and hardware, as well as the procedures and tools used for upkeep. Hooldatavus influences total cost of ownership, system availability, and long-term viability.

The concept applies across domains such as software, hardware, and infrastructure. In software, maintainability depends on modular design, clean interfaces, good documentation, testability, and ease of patching. In hardware, it relies on serviceability features, modular components, standardized parts, accessibility for maintenance, and remote diagnostics. In facilities and infrastructure, maintainability is supported by preventative maintenance plans, spare parts availability, monitoring systems, and clear maintenance procedures.

Measurements and standards for hooldatavus include both quantitative and qualitative assessments. Common metrics are mean time to repair (MTTR), time to diagnose faults, and maintainability indices that reflect design quality and documentation. Quality models such as ISO/IEC 25010 treat maintainability as a distinct characteristic, with subcharacteristics including analyzability, changeability, stability, and testability. Practical evaluation blends objective data (downtime, repair time) with expert reviews of code readability, documentation completeness, and ease of configuration. High hooldatavus generally leads to faster fault resolution, smoother updates, and lower long-term maintenance costs.