Since I'm not longer using ZFS and striped mirrors, I don't really care about the 4x 1 TB drives I have in my system since the 7x 4 TB drives are more than enough, and I will probably be replacing their lost capacity with a 6 TB drive in the near future. More space (physically and data wise) in my case and less heat and power consumption

 

Now, how do I go about removing them all? I couldn't really find anything on removing multiple drives. All the drives have very little data on them, like 1-5 GB each. I should be able to just rsync the data over to one of the 4 TB drives, correct? I may have been doing some things incorrectly before when trying to move everything off of my cache drive before swapping it out (the mover refused to completely empty the drive for some reason), and I did a rsync -a --progress --remove-source-files /mnt/cache /mnt/drive1 (maybe not the correct paths, doing this from memory) and it moved the files....but also deleted them from both locations for some reason. I had caching disabled while doing this.

 

Now on to the actual removal: how do I go about this when using JBOD? Do I just spin down the array and remove the drives from the UI then from the server itself? 

Edited July 27, 20178 yr by brando56894

After moving all data from those disks you need to do a new config and re-sync parity with the remaining disks:

 

tools -> new config -> retain all

 

Then unassign the disks you want to remove and start the array to begin the parity sync.

Thanks I'll give it a go.