@scottalanmiller said:
We never use dedupe outside of the backup system. Good file system management gives you most if that value.
And for a VM you'll get more from dedupe at the storage layer than inside a single VM.
2012 dedupe works well. It is a good product. It probably makes the most sense on a very large file server.
Storage-level deduplication can be quite useful. However, with the modern push toward local storage, shared deduplicating storage isn't really seen except for in rather large environments.