I do not quite understand the meaning of begin and end time in snapshot creation.
I understand it this way:
Begin - is the time when snapshot can be created
End - is the time of the end of possibility of creating a snapshot. Meaning that it may take time to create snapshot and End time gives a comfort zone for FreeNAS to complete the creation. In this case it is probably better not to make End time equal to Begin time and set it it up within 10 - 15 minutes difference (for 5, 15 minutes...
Snapshots, begin, end time and interval.
I understand it this way:
Begin - is the time when snapshot can be created
End - is the time of the end of possibility of creating a snapshot. Meaning that it may take time to create snapshot and End time gives a comfort zone for FreeNAS to complete the creation. In this case it is probably better not to make End time equal to Begin time and set it it up within 10 - 15 minutes difference (for 5, 15 minutes...
Snapshots, begin, end time and interval.