So I am out of space again - at the moment have all my drives in pairs as mirrors, all 16 bays of my external esata cases full with mostly 2 and 3 tb drives, some 5s.
Anyway, the logical solution is to give storage spaces another shot. It was hopeless when I tried it on 8 but apparantly it is better now.
The thing I found back then is I could only make 16 TB volumes which TBH is a bit crap of it.
Has that been solved in 10 so I could take several of the drives, set them up as a parity space (since its just movies, music and my video camera footage so basically archival) and make a 30+ TB space to stick everything on instead of needlessly breaking it up into smaller ones?