This video looks at the four file systems supported by Windows. These are ReFS, NTFS, FAT and exFAT. The video looks at what each file system is capable of and its limitations.
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Resilient File System (ReFS)
The Resilient File System is a new file system built from scratch by Microsoft. Since it is a new file system it requires Windows 8 or Windows Server 2012 in order to operate. The main design difference between it and previous operating systems is that it is designed to fix problems while the operating system is online. For this reason the check disk feature that is found in previous operating systems that can be run to fix problems no longer exists. Given a new approach has been taken in the operating system, it is better at ensuring data integrity and corruption than previous operating systems.
ReFS Limitations
ReFS was designed to replace NTFS, but at the present time there are some limitations which may mean that you will need to stay with NTFS.
Disk quotas: Disk quotes are not supported. Microsoft states in a blog post that this is a feature that can be supported outside the file system so it is possible for this feature to be supported in software. Possibly Microsoft will add this feature later on or some 3rd party software is available that will add this feature.
NTFS compression and EFS: File compression and encryption (Encrypting File System) are not supported.
Hard links: Hard links are not supported which is required by data duplication. Data duplication allows a file in the drive to be stored in one location but referenced in many different locations. It is used in the Windows Side by Side store (used to store software and drivers in the Windows directory) and may be the reason why ReFS cannot be used for the operating system at this time.
Booting the OS: The biggest limitation is that ReFS does not support being used to boot the operating system. For the present, the drive containing the operating system will need to use a different operating system.
Named streams/Object ID's: Named stream allows a name to be given to a file stream by the software. This is generally a feature that is used on alternative operating systems not Windows systems. Object ID's allow a file to be given a number. This is generally used for indexing software.
Extended attributes/8.3 Filenames: Extended attributes are also not supported. Extended attributes is a feature that allows software to add additional attributes to a file in addition to the standard read only, hidden, archive and system. This feature is mostly used on alternative operating systems. It is rare for Windows software to use these features. 8.3 filenames are not supported. This dates back to the MS-Dos days. Windows 95 introduced long file names.
Software support: Because ReFS also does not support named streams and object ID's. Some software does make use of these features so it is important to check all software before using it. For example SQL does not fully support ReFS.
Convert from NTFS: Currently there is no software available which will convert a drive for NTFS to ReFS or ReFS to NTFS. If you want to change file systems you will need to back up your data, reformat the drive and then restore the data to the drive.
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References
"Installing and Configuring Windows Server 2012 Exam Ref 70-410" pg 45
"ReFS" http://en.wikipedia.org/wiki/ReFS
"Resilient File System Overview" http://technet.microsoft.com/en-us/li...
"Building the next generation file system for Windows: ReFS" http://blogs.msdn.com/b/b8/archive/20...
http://en.wikipedia.org/wiki/Comparis...
"Maximum Volume Sizes" http://technet.microsoft.com/en-us/li...
"Windows Server 2012: Does ReFS replace NTFS? When should I use it?" http://blogs.technet.com/b/askpfeplat...
"NTFS" http://en.wikipedia.org/wiki/NTFS
"File Allocation Table" http://en.wikipedia.org/wiki/File_All...
"exFAT" http://en.wikipedia.org/wiki/ExFAT
"NTFS vs FAT vs exFAT" http://www.ntfs.com/ntfs_vs_fat.htm
"File System Functionality Comparison" http://msdn.microsoft.com/en-us/libra...
Windows File Systems windows 10 pro | |
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