I have tried two USB 3.0 3.5 inch enclosures, both behave the same, the drive spins down after some time (< 12h) I haven't rigorously monitored it to see when it spins down. I just discover it when shows don't record.

GODO: https://www.amazon.com/dp/B0B9MVWFRG
Inateck: https://www.amazon.com/dp ...

Unit: Flex 4K
Device ID: 10A2ED19
External hard drive in a USB 3.0 SATA enclosure
Send Diagnostic Info is turned on

When the hard drive has spun down due to inactivity, but Flex 4K hasn't yet attempted a recording, one can open the app and see the index of recorded programs. If one browses into a ...

Unit: Flex 4K
Device ID: 10A2ED19
External hard drive in a USB 3.0 SATA enclosure
Send Diagnostic Info is turned on

When the hard drive isn't active for some time, the enclosure spins it down. At some point following, I believe when the Flex 4K wants to start a recording, something goes wrong, the ...