As part of our library we need to store a fair bit of HD video, photos and vector art on disk for use in projects. I was hoping that the data deduplication functionality in Windows Server 2012 might help me out here in terms of capacity, however I'm seeing almost no benefit from using it. My test server has a single 6.8TB volume with around 6.2TB of data that has been copied across from the live server. After around a week of not being touched with deduping enabled the savings reported on that volume is only 30GB, or around 0.5%.
Do these figures sound right for these sorts of files, or am I expecting too much from data deduplication? Should point out that as this essentially is an archive server, performance comes second to capacity. Is there anything special I need to do with my deduping settings so that Windows optimises for capacity over performance?