BTW i am still quite confused. I have added 24 TB of HD’s but capacity is still set at 16.27. Usage says Drives: 6TB + 6TB + 6TB + 6TB + 24 TB (21.83 Actual) i formatted the drive is 2 volumes and i am copying data to the first volume which is showing in the volumes and taking up space which is showing in the dashboard. So the 5D is supports 6TB drives but the dashboard doesn’t - what am i missing here?
I think you forgot to factor in single disk redundancy too! Drobo will by default set aside ONE single largest drive in the pack of drives for data protection. So you true usable space is actually 3x 6TB (or around 16.27TB)