I'm at a loss. Over the last couple of weeks something keeps causing my drives to all spin up, and stay up. I've had file activity on, and unless someone is actually watching a file, nothing is showing up. I've checked everything I can think of. I've even stopped all dockers and VM's, and it still gets spun back up in just a few seconds. The amount of data being pulled is usually very small. 200kb or less, with the occasional 1MB. It also appears to pull the same amount for multiple drives at the same time, not all of the drives, but maybe 3/4 out of 7. This screenshot was taken a few seconds after I manually spun down all discs. I've also added diagnostics. Thanks in advance for your help! joshflix-diagnostics-20250915-1545.zip

+1 to this, I went through the process of disabling everything to check if a container or VM was writing to the disk but no luck. Any time I try to spin down disks they start back up witching 5 seconds. I’ve used the File Activity plugin (which shows nothing is using the disks) and the cache directories plugin (which by default waits for an idle time with the disks, which isn’t happening because something’s being written every ~5s, I can hear the thunk of the disk on an even cadence).

2 hours ago, dumbestsmarthouse said:

disabling everything

Did you actually Disable Docker and VM Manager in Settings?

Just wanted to pop back in and say I found the culprit - the Home Assistant Unraid integration was using the API to poll stats on hard drive status/temp/etc, and that’s what was causing them to always stay spun up. Disabling it immediately solved the issue!

Hi guys, I don't know if you've solved the problem yet. In my case, it was Immich that prevented the drives from spinning down.