Hello.
I've been using Unraid since around 6.6 or so, and for some reason I have had more issues in the past 2 months than ever before.
Most recently, starting yesterday out of the blue, my array seems to suddenly get random tiny (several kB/s) reads constantly. This appears to potentially correlate with a nonstop, "pulsing" blinking of the HDD activity LED on the case every single second, all day. As a result, my array will not spin down, and if I manually spin it down, it instantly triggers high CPU activity and the array coming back online.
I'm attaching several relevant pictures to show my general config.