Suppose you want to create a Backup Job with the following rules:
- Every day at 00:00, keep 7 recovery points
- Every Monday at 06:00, keep 4 recovery points
The granularity of the first rule is a day. Keeping 7 recovery points means filtering out from a time window of 7 days the recovery points created with the first rule. The same applies to the second rule.
Suppose on October 1st, 2018, you’ve activated the Backup Job with the just defined Retention Rules; on October 29th, at 00:00 am, Noovolari Smart Backup would be managing the following recovery points.
Next recovery points will be taken on October 29th, at 06:00 am, for the Weekly Retention Rule and on October 30th, at 00:00 am, for the Daily Retention Rule.
Thus, on October 30th, at 00:00 am, after the daily recovery point was taken, the scenario would change as described below.
As you can see, as time windows shift, recovery points that are no more included in them will be deleted.