Hi, we use RDX drives on different servers. But one thing you must know. If you dont umount the drive an press the eject button on the driver longer as 2 seconds and the drive is mounted, you get a kernel panic.
I swear I'm not a shill, and you should really look into High-Rely disk-based backup systems.
For virtualization you should probably look at networked devices. RDX is a local interface right? Block device passthrough in KVM is questionable stability in my opinion. You are defeating the hardware abstraction by using passthrough.
I wrote a comprehensive blog post on their SATA 2-bay device, I'd love to hear how the network attached versions work...
Simple, cost-effective hardware, and great support (spoke to a lead engineer for 20mins just joking around and throwing ideas at him).
Having looked at RDX, I just found it to be too complex, proprietary, and poor value.
