RetentionArchiveTier
[Custom snapshot policies only] Describes the retention rule for archived snapshots. Once the archive retention threshold is met, the snapshots are permanently deleted from the archive tier.
The archive retention rule must retain snapshots in the archive tier for a minimum of 90 days.
For count-based schedules, you must specify Count. For age-based schedules, you must specify Interval and ** IntervalUnit**.
For more information about using snapshot archiving, see Considerations for snapshot lifecycle policies.
Types
Properties
The maximum number of snapshots to retain in the archive storage tier for each volume. The count must ensure that each snapshot remains in the archive tier for at least 90 days. For example, if the schedule creates snapshots every 30 days, you must specify a count of 3 or more to ensure that each snapshot is archived for at least 90 days.
The unit of time in which to measure the Interval. For example, to retain a snapshots in the archive tier for 6 months, specify Interval=6 and IntervalUnit=MONTHS.