Disk size and hotswap backup

That is true, it's just that up to now, one of the features was that while the underlying code was different, at least Frontview "looked" the same across the product lines. I am more disappointed that the Marvell based devices do not support NFS and rsync than the lack of the new interface design. That lack precludes me using them in my setup (Duo wouldn't work anyway). The current 4.1.x and 4.2.x design is comfortable in that over the years I've pretty much learned where everything is.