Hi girls and guys Does anyone know a good and reliable data dedup solution? I'm going to upgrade to windows 10 so then the windows server package hack doesn't work anymore, but there are other reasons why I don't like windows dedup. SDFS on the other hand meets my requirements but doesn't work correctly atm. SDFS: - PRO: All stuff is stored in a folder and the actual volume is mounted to a drive letter. This makes it easy to backup the volume because you can copy the folder. - CON: when removing files and there are unused blocks, these are only removed when running the compact command, but this command doesn't work on windows (bug I guess). Windows dedup: PRO: it does work flawlessly CON: Always dedups a volume, not as easy to backup as SDFS. CON (temp): Not working on windows 10 yet (and even if it was it's still a dirty hack) CON (temp): No variable blocks but this will come in server 2016 When you want to backup (file based, not image based) a windows volume it will restore the full files and you need to dedup the target volume too -> waste of resources and it takes a huge amount of time to backup over usb2.0. A solution is to use a VHD that's deduped, then backup the VHD. When a file is removed and the dedup vol is compacted I'd then have to shrink the VHD too, this is unnecessarily complex. That's why I like the folder based approach of SDFS. The only problem is that compacting an sdfs volume doesn't work yet. So does anyone know of some other solutions? EDIT: there are solutions that are used for storing backups, but I still want to access my files like if they were on a normal disk.