From “Ask Premier Field Engineering (PFE) Platforms” Blog: When I first heard of ReFS my immediate first question was whether ReFS as a file system was a direct replacement for NTFS. It didn’t take long before my customers began to ask me the same question. In learning about this new file system in Windows Server 2012, it became apparent fairly quickly that ReFS, while a new file system, is built differently. ReFS stands for Resilient File System. NTFS has its place, and so does ReFS. While ReFS may appear to have some similarity to NTFS, it does not contain all the underlying NTFS features and scales efficiently to handle data sets far larger than NTFS.
Continue: Windows Server 2012 Does ReFS replace NTFS When should I use it – Ask Premier Field Engineer