I'm looking for a free solution to build virtual disk targets accessible over SAN (iSCSI). Primary requirement for me is data deduplication support. After much search on the internet i came across quadstor (quadstor.com) and nexentastor (nexentastor.org). nexentastor isn't on linux but since they include everything as an iso its fine by me.
But i haven't been able to get any reviews on these software. Has any one had experience with either ? Have i missed any other obvious solution ?