Besides the Metro UI and a ton of other new features, Windows 8 has something more in store – a shiny new file system. Though only for the Windows Server 8, the ReFS, or the Resilient File System is a next generation file system built upon the NTFS. ReFS will retain a high level of compatibility with NTFS features by reusing NTFS’ API/semantics engine. Apart from being a better storage system in general, the ReFS will bring a new storage engine that is expected to resist data corruption, protect again latent disk errors, grant large volume, directory and file size and uphold metadata integrity.
Read more about the ReFS on the Windows 8 Blog.