Retention Policy might work Incorrectly Leading to Missing Recovery Points
说明
In rare cases and under certain preconditions, rollup might miss the creation of a monthly rollup recovery point. This is by design of the rollup logic.
原因
It can be caused in the events of missing weekly incremental rollups, drastically changing the retention policy, or the skipping of rollup jobs due to other Core jobs such as archiving recovery points.
解决办法
In order to avoid this behavior, the best practice would be not to miss a day's worth of snapshot, nor to change the retention policy drastically in which you begin to mass rollup daily snapshots. Also, consider adjusting retention to only keep weekly recovery points opposed to one singular monthly.