Support Why does my NAS sometimes automatically wake up during Sleep mode? Applied models: All NAS Series QTS routinely performs maintenance and requires the system to wake up for a short period before returning to Sleep mode. Release date: 2017-05-03 Was it helpful? Yes. No. Thank you for your feedback. Thank you for your feedback. If you have any question, please contact firstname.lastname@example.org 50% of people think it helps.