March 19, 20242 yr Strange effect... I have an array with 4 data drives + parity. All are fine. Recently I have noticed that drive 4 is "always on". I've checked the drive it only contains the folder "Filme" and nobody is watching a movie right now. So, like the other drives, it should be OFF. First I did not really care about this, but after some weeks I got more curious and investigated. "Open Files" shows no open files on that disk. and, if I shutdown it manually by clicking in the gui, it instantly turns on again Mar 19 06:20:11 F emhttpd: spinning down /dev/sdc Mar 19 06:20:12 F emhttpd: read SMART /dev/sdc If I stop the array, I can spin it down again, but as soon as the array is on, it is on and will stay on forever again. The settings for the drive are identical to the others. So, I'm now out of ideas what might cause this and how I can fix it. Besides the energy consumption, it does no harm, but still it is strange. Any idea what might cause this instant "wakeup call" f-diagnostics-20240319-0632.zip Update: after a reboot D4 suddenly spins down again. Still no idea what has kept her up for weeks. Edited March 19, 20242 yr by MAM59
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