1. What is the default storage strategy?
A single inspection generates a large data volume (about 100GB and over ten thousand photos for a 500m-class bridge), and retaining everything consumes substantial storage. The system’s default strategy is: defect data must be retained (for observing defect history and development); for defect-free imagery, only the latest inspection data is kept as the baseline, and historical defect-free images can be cleaned to save space.
2. Can all data be retained?
If the customer is not sensitive to storage space, all historical data can also be retained, configured per deployment environment and needs. Both cloud and on-premise deployments can flexibly adjust the strategy by storage capacity.
3. Storage strategy selection
| Strategy | Advantage | Applicable to |
|---|---|---|
| Compact storage | Saves space cost | Large data volume, budget-sensitive |
| Full retention | Complete historical archive | Long-term traceability needs |
4. Applicable conditions and scenarios
- Cloud or on-premise deployment configured flexibly by storage capacity
- Trade-off between defect traceability needs and storage cost
- Data retention strategy adjustable per customer requirements
5. Notes
Cleaned defect-free images cannot be recovered; if a complete historical archive is needed, choose full retention or periodic archiving.