I am have been swapping disks in my array for larger and faster versions. And following one disk swap the array will no longer spin down. 

 

The disk swap was done by adding the new disk, emptying the old disk using Dynamix file manager. Removing the old disk and using <New Config>, <reserve current assignments: all>. Before rebuilding parity. 

 

I have looked through as many of the "Array won't spin down" threads but none are helping resolve my case. 

 

My symptoms are that if I spin down all disks they are woken up within a minute by what look to be small read/writes (always first to one disk and parity, then to the remaining array drives). None of this is being recorded by the File Activity plugin. And the open files plugin does not show anything open on the array. 

 

I use docker (vdisk is /mnt/cache/docker.img) but the behaviour persists with all dockers off and the docker subsystem shut off.

 

The duplicate files script detailed here:

https://forums.unraid.net/topic/33535-unraidfindduplicatessh/

Reports that there are no duplicates on the array. 

 

Watching the Main screen alongside a terminal window running iotop -o confirms a disk write but does not list any processes. 

 

Any help gratefully received.

 

 

 

shortie-diagnostics-20241009_1709.zip

This problem has been solved.

Embarrassingly the disk activity was caused by the Home Theatre app on a Zidoo media player. With its access to the NFS shares deleted, problem goes away.