Fix common problems is reporting the following error:

"The following files exist within the same folder on more than one disk.  This duplicated file means that only the version on the lowest numbered disk will be readable, and the others are only going to confuse unRaid and take up excess space:

/mnt/user/system/docker/docker.img   disk7 cache"

 

Do I just delete one? Which is on the lowest disk? disk7 or cache? Which should be deleted?

Cache is treated as 'lower' than any array disk. 

 

I guess the question is why has this happened?  It suggests at some point the cache disk was not online when the array was started so a new docker.img file got created on the array.  Looking at the dates on the files might give a clue.

Thanks. I recently had an issue that two of the three SSDs in my cache was offline. Ive deleted the oldest.