The number of days to retain automated snapshots in the destination AWS Region after they are copied from the
source AWS Region.
By default, this only changes the retention period of copied automated snapshots.
If you decrease the retention period for automated snapshots that are copied to a destination AWS Region, Amazon
Redshift deletes any existing automated snapshots that were copied to the destination AWS Region and that fall
outside of the new retention period.
Constraints: Must be at least 1 and no more than 35 for automated snapshots.
If you specify the
manual option, only newly copied manual snapshots will have the new retention
If you specify the value of -1 newly copied manual snapshots are retained indefinitely.
Constraints: The number of days must be either -1 or an integer between 1 and 3,653 for manual snapshots.