I have an MP 4,1 2009 OSX 10.11.5 HD Setup: 1 X 120gb Intel SSD on PCIE card (named OSX) Apple RAID card 4 X 2TB Western Digital Red drives in RAID 5 (named RED) 1 X 4TB WD USB 3 External HD (on USB 3 PCIE) Time Machine I originally setup my RAID as 5 because I thought I needed that last 1.23 TB.. ('go to 11' if you will) but now I need more speed so I want to swap to RAID 10 (since the RAID 5 writes are so much slower). I have my user home directories set to use /Volumes/RED/Users/*USERNAME*. I also have another user 'Admin' that is basically a blank user homed on OSX. I want to know if I: login as 'Admin' (since Admin is homed on OSX and not RED) wipe out the RAID 5 recreate the RAID as 10 (keeping the name 'RED' or Time Machine won't link up) restore 'Users' from Time Machine logout Admin, login as me Will this work correctly with permissions and all? Or, do I need yet another external HD, login as Admin, run that terminal command to copy the users folder to the new external, re-RAID, and terminal command it all back again? Thanks in advance.