I think there should be more options to plan the server backuping. Instead of pre-defined options for delays, let the user choose the hours / days both for backup interval and conservation delay, and the moment it should backup.
And even more, make an option to delete old backup except some.
For example, I would like to backup my server every day at 10pm, and keep only :
- the 7 previous days backup
- the first day of each weeks of the current month
- the first day of each previous monthes
I know this is a complex case, but there should be a way to let the user make a custom backup plan.