1. Backlog Trap is the effect on a business due to the backlog of work that accumulates when the IT system or business process is not available for a extended period.
2. The effect on the business of a backlog of work that develops when a system or process is unavailable for a long period, and which may take a considerable length of time to reduce. (Source:ENISA - the European Network and Information Security Agency. BCM & Resilience Glossary)