The list of VSA's doesn't stop with LeftHand (or NetApp)
In your discussion of Storage Virtual Appliances, you left off StorMagic (www.stormagic.com), which was one of the first to ship an SVA. They carry the VMware Ready designation: http://www.vmware.com/appliances/directory/323773. They also recently signed a reseller relationship with NetWorld, VMware's largest reseller in Japan.