You might have noticed that the ASUSTOR Flashstor 6 and Flashstor 12 Pro do not come with heatsinks for SSDs. This is intentional. The Flashstor series come with an active cooling solution that consists of a fan blowing cool air directly over SSDs. In normal operating ambient temperature environments, tested SSDs do not exhibit signs of overheating outside manufacturer specs. Heatsinks are available for purchase if operating the NAS in an extreme ambient temperature evironment, but are not usually necessary for most environments. Future SSDs may have higher heat dissipation requirements. Leaving heatsinks as a separate purchase allows everyone to customise their experience.
In this video, we test the NAS in a 35°C environment to show that there are no issues with heat dissipation.