TerraMaster Official Forum

[at=norman0 post_id=27515 time=1685702985 user_id=5496][/at] I have 3 x 4TB Ironwolf ST4000VN008 and 1 x 4TB ST4000VN006. Auto fan control was working fine on my F4-421 on 5.1.34 so it's definately a bug introduced with 5.1.37 and seems related to HDD hibernation. This is a shame because I've waited...

[at=norman0 post_id=27508 time=1685691029 user_id=5496][/at] Thats exactly my problem, when system is cool and HDDs are in hibernate the fans are running all the time (around 1500rpm). Several minutes after the system wakes and HDDs spin up the auto fan control will behave properly. FanSpeedImmediat...

[at=norman0 post_id=27413 time=1685438372 user_id=5496][/at] Same issue on F4-421, fan control on AUTO worked much better in 5.1.34. When the NAS was idle for an extended period, with HDDs spun down and device, cpu and hdd temps all sitting at 24degC the fan was spinning away at 1500rpm. After notic...