Message: The free Repository space on ApplianceName has fallen to critical limits. onQ is starting to expire the oldest backups for each Protected Node in order to recover space.

Cause: onQ has a built‑in purge policy whereby if its repository disk space utilization exceeds 85% onQ begins to “free up” space by deleting PN backups, starting with the oldest backups. In this case, this threshold was reached, so onQ began deleting PN backups, starting with the oldest backups.

Solution: Nothing. The system is working as expected.