preferredBackupWindow

The daily time range during which automated backups are created if automated backups are enabled, using the BackupRetentionPeriod parameter. The default is a 30-minute window selected at random from an 8-hour block of time for each Amazon Web Services Region. For more information, see Backup window in the Amazon RDS User Guide.

This setting doesn't apply to Amazon Aurora DB instances. The daily time range for creating automated backups is managed by the DB cluster.

Constraints:

• Must be in the format hh24:mi-hh24:mi.

• Must be in Universal Coordinated Time (UTC).

• Must not conflict with the preferred maintenance window.

• Must be at least 30 minutes.