New Time Retention Option

Time Retention Option	A time retention option keeps one generation from each time interval that fits into the retention span.
Keep one generation every	Select the interval of time. When this rule is enforced, the most recent generation from the interval is kept, for as many intervals that can fit into the retention rule’s length. • See note (at the end of this help dialog box) about the behavior of this option.
Keep one generation every week on or before [day] at [time]	When this rule is enforced, the most recent generation from each interval is kept.
Keep one generation every month on or before the [x] day at [time]	When this rule is enforced, the most recent generation from each interval is kept.
Keep one generation every year on or before the [x] day of [month] at [time]	When this rule is enforced, the most recent generation from each interval is kept.
Retention option valid for	Select the retention option’s length (the time span it covers). At least one generation interval must fit into this retention length. • By default, this period is 1 week. If you select a time retention option that spans a longer period, you should extend this value to at least match that period.

• When selecting the option “Keep one generation every <n> years”, the generations will be considered for the interval between January 2nd 00:00 until January 1st 23:59:59 next year. This might not be what is expected by users (e.g. January 1st 00:00 to December 31 23:59:59 same year).

• Instead, users can implement retention with the rule “keep one generation every year...”, where users can specify the start date and time of the interval (e.g. “Last day of December at 23:59:59” for an interval between January 1st 00:00 and December 31st 23:59:59).