A couple of years ago Microsoft acquired a company called “String Bean Software” which was IMHO a simple but great iSCSI Target solution, and it it was incorporated into the StorageServer product.
Today Microsoft launched the iSCSI Software target 3.3 for public download. This is absolutely great, now we have the possibility to create (Hyper-V) clusters on shared storage!
It can be downloaded from the Microsoft download site: http://www.microsoft.com/downloads/en/details.aspx?FamilyID=45105d7f-8c6c-4666-a305-c8189062a0d0