Question about Force Delete retention calculation

[rin]

Hi,

According to the documentation, the Force Delete feature should be configured with a value that is at least one backup generation period longer than the retention period.

I would like to confirm my understanding and the detailed calculation logic.

Example:
- Retention period: 93 days
- Maximum backup generation interval: 31 days
Based on the documentation, is it correct to assume that a Force Delete value of at least 124 days satisfies the requirement?

In addition, I would like to understand how the age calculation is performed.

For example, if Force Delete is configured to 124 days and a backup was created on January 1st at 06:00:

1. Is the age calculated using the exact timestamp, or only the calendar date?

2. Is a backup deleted when its age is:
- greater than the configured number of days
- greater than or equal to the configured number of days

3. Which timestamp is used for the calculation?
- backup start time
- backup completion time
- another timestamp

Could you please clarify the product behavior?

Best Regards,
Rin