[*ALL* shares are *GONE* ... ??? (unRAID 6.6.1)]

Same here. Upgraded yesterday to 6.6.1 and after ~18 hours all shares goes missing. Rebooting fixes it temporary, time to rollback to 6.5.3.

[Best SSD for cache disk?]

Currently I have been running OCZ Vertex 4 (256GB) with no issue so far since two years.

I had also Samsung 830 Pro and Crucial MX100 as an cache drive without any issue.

Last year I tried OCZ Vector 180 and had some issue with the file transfers and I/O operations as the system hangs for few seconds.  I read somewhere that this is the issue with controller on that particular ssd.

[RC5/RC6 Empty Disk shows 1.5GB used data]

df -h command is showing 33MB for this particular disk:

 

/dev/md11      2.8T  33M  2.8T  1% /mnt/disk11

 

its seems that GUI is calculating wrong  used space on the disks.

 

[RC5/RC6 Empty Disk shows 1.5GB used data]

Since RC5/RC6 release in unRaid GUI the empty (formatted as XFS under unraid) disk its showing 1.5GB used data.

In RC3 GUI the same disk shows only 37mb used data.

I'm wondering if RC5/RC6 is allocating something or its just cosmetic bug