I just thought I’d chime in that I’m looking at FreeNAS and Rockstor, and SSD Cache support is, I think, the sole reason I’ll probably end up on FreeNAS. It’s too important for achieving decent speeds in our environment. Otherwise, I think Rockstor looks as good or better for our needs. I guess lack of an Amazon S3 backup plugin is the other thing, but that’s easier to work around.