I've expressed the desire to use ZFS (via FUSE under Gentoo) with my next Kuro. I realized that most people here have probably never heard of ZFS or if they have probably suffer from some misconceptions. For a good intro please see Tom Yager's post at:
While I appreciate the kuro isn't the ideal box for stringing lots of JBODs together, the Pro DOES have two SATA interfaces and making one into eSATA is merely the matter of the correct cable, and there are USB ports. While not ideal, ZFS doesn't care what the underlying hardware is, if it's visable as a file, it can be part of a pool, which includes USB. ZFS solves the silent data corruption problem (which I've had with my Kuro and several other boxen) and is rediculously easy to use. Seriously, if you can log into the command line prompt and understand what device files are and know how you want to merge or divide up your disks, you'll be using it in a manner of minutes and you'll spend more time unlearning old habits. ZFS doesn't care if the devices are radically different or even different sizes for mirroring and RaidZ protection, although you may want to create equal size partitions and use the leftovers in order to not waste space.
I'd love some of the other features of OpenSolaris, combined with Portage on a Kuro, but that requires a level of effort *WAY* beyond my means. Hmmm, FreeBSD has a kernel native port of ZFS and Portage is available, has anyone tried FreeBSD on a Kuro yet?
So, why use ZFS with a Kuro? Because of all the reasons I want to use a Kuro anyway: low power and compact size chief among them. The dirty thought is that I could also probably get two SATA 2.5" drives INSIDE the chassis with a little bracket work...
Of course I want the rootfs in flash so I can use the whole disks for ZFS, but that presumes I can ever order a Kurobox Pro and get it delivered...