If you hold a VMware vExpert, VCI, Microsoft MVP, MCT, CTP, and CCI certification, Starwind offers you a free NFR license until 30th September.
Starwind is a software sstorage solution based on MS Windows that can convert a simple server (both with local disks or used as a frontend for other SAN storages) in an iscsi SAN.
I tested a while ago their solution (you can read a review in this pdf) and I liked it; I also wrote a dedicated whitepaper titled “Best practices for backing up virtual servers with Veeam software and StarWind storage“.
At this link you will find all the information you will need to obtain your NFR license.