preferredMaintenanceWindow

The weekly time range during which system maintenance can occur, in Universal Coordinated Time (UTC).

• Default: A 30-minute window selected at random from an 8-hour block of time per region, occurring on a random day of the week.

• Format: ddd:hh24:mi-ddd:hh24:mi

• Valid Days: mon, tue, wed, thu, fri, sat, sun

• Constraints: Minimum 30-minute window.