Just scored one of these on ebay for $595. I had two vsphere hosts and a storage server in a triangular mesh using x520-da2 nics. A backup storage appliance is virtualized. I want to move the virtual backup appliance to a 4th host, but that is problematic. I can still do a crossover mesh, since each nic has 2 ports, but that's the end of the line. Both the current and 4-way approach suffer from the shortcoming that the two vsphere hosts need to connect to different IP subnets, since OmniOS (the storage appliance OS) doesn't let you assign an IP to a bridge interface, so I would need to assign an IP to one of the two OmniOS 10gb interfaces, and if the corresponding vsphere host goes down, the other vsphere host loses connectivity too Hoping this won't be too loud