Yes the latest one is what i meant. Solaris Express just being the continuation of Opensolaris (but in a closed form), ie the free one with no support. In Solaris Express 11.0 it's impossible to replace a 512byte sector drive with one reporting 4k physical sector sizes in a ashfit=9 pool. Solaris express 11.1 fixed this (as it was silly anyway, since a lot of us had 512e drives with physical 4k sector sizes anyway, its just the drives weren't reporting correctly). I'm hoping to offload all my data to a friend in order to recreate my pool as ashift=12, but since i have 30TB full it's going to take a while. Currently re-silvering drives to 4Ts is taking 50hours per drive How long before 8K sector drives come out and we need another different optimal ashift?