Today I got the Small Tree GraniteStor storage solution working with help of Chris from Small Tree.
I briefly tested that it can allow playing 10bit 422 uncompressed HD from two Mac Pro clients with 10Gb connections at the same time. Also, the configuration allows 24 1Gb ethernet connections aside from two 10Gb connections, so I'm hoping that iMac and Mac Book Pro can do some offline level editing using this storage system.
It seems quite simple where you connect the GraniteStor RAID to Xserve via ATTO R380 SAS connection, a dual channel 10Gb Small Tree card, then specially configured x24 1Gb switch with x2 10Gb connections in the back (although one of them is connected to the xserve, but the second port on the 10Gb card on Xserve can act as a connection to a client, thus it provides two 10Gb connections with two clients), then the client can either separately connected to the 1Gb connection of the switch with the second 1Gb ethernet port on Mac Pro (the first port can be normally connected for your infrastructure) or install 10Gb card to your Mac pro for uncompressed workflow. 1Gb ethernet connection on Mac Pro provides multistreams of full HD Prores422HQ realtime playback.
I received everything the day before, then received the Xserve yesterday. We connected everything in the day today, and Chris helped me using iChat and screenshare to setup the switch and the clients right, but only took less than an hour to setup.
I will give more reports on this system especially with R3D editing in few days.