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New file system for Windows 8

20.01.2012

Microsoft's new file system will offer much more flexible storage and data integrity than NTFS, which turns 20 next year.

Microsoft has introduced a new file system for computing machines on the Windows platform. It was called Resilient File System (ReFS), which can be translated as "Fault Tolerant File System". Microsoft Vice President Steven Sinofsky said in a corporate blog that since they are "reinventing" Windows with Windows 8, this approach should also apply to data.

ReFS uses the basic principles of NTFS, the most popular file system on the market, introduced about 19 years ago. However, the new system was created from scratch, according to the official blog. The main goal: support for future generations of storage systems and new scenarios for working with information.

When developing ReFS, the engineers pursued the following tasks: to borrow all the best from NTFS and cut off all the difficult moments (for example, data compression and quotas were excluded); enable the system to validate and automatically correct data, maximize scalability, enable system uptime by isolating problem areas, and enable new Storage Spaces technology.

The Storage Spaces technology introduced a few days ago allows you to create single logical spaces for storing data from several drives with different connection interfaces, for example, "Documents", "Multimedia", "Archive", etc. At the same time, it is possible to connect an additional drive to the space at any time to increase the total capacity.

With the new file system, data integrity is prioritized
ReFS will allow you to detect the loss of data fragments and incorrect addressing of fragments - using checksums. It will also add technology to track degraded data ("bit rot") - the type of loss that is most difficult to notice. Data degrades due to the fact that the cells of the drive are used unevenly during operation. To identify such fragments, a process will be added to the operating system that will regularly compare data with data in backups and identify discrepancies.

If files are corrupted and cannot be restored from a backup (for example, if the system damaged all copies of a file due to some error), it will be automatically removed from the namespace. Thus, it will be "cut off" from the OS and will not cause subsequent failures.

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