Quick update from Starwind:-
First of all, StarWind has entered into an OEM agreement with Western Digital. Under the terms of this agreement, the released software upgrade v1.5.7.30 adds the new ability for WD Sentinel™ DX4000 small office storage server to act as an iSCSI target. The support for iSCSI Storage Area Network (SAN) with newly introduced iSCSI target capability is powered by StarWind™:
http://www.starwindsoftware.com/news/96
And also, StarWind Software reached the final of the Datacentre Solutions (DCS) Awards 2013 in the Datacentre Storage Software Product of the Year category: