ReFS

ReFS
Manufacturer	Microsoft
Full name	Resilient File System
Initial release	January 2012 ( Windows Server 2012 , Windows 8 )
Technical implementation
Directories	B + - trees
Maximum values
Size of a file	262144 EiB - 1 bytes
Number of all files	2 64
Length of the file name	32768 Unicode characters
File system size	4 ZiB
properties
File rights management	ACL
Transparent compression	no
Transparent encryption	none at file level (EFS)

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REFS ( Re silient F ile S ystem ; German Robust File System ) is a file system from Microsoft . It was introduced with the Windows 8 and Windows Server 2012 operating systems .

With the Fall Creators Update (version 1709) for Windows 10 , the creation of new partitions with ReFS is only possible in the Enterprise and Pro for Workstations versions and no longer with the editions intended for home users.

Goal of the manufacturer

The goals for the development of the ReFS file system, which are mentioned here and there on Microsoft's website, were:

Compatibility in design with the frequently used NTFS ,
Access by known operating systems possible,
Transaction model for maintaining consistency ,
Checking of data during reading and writing,
Fault tolerance through redundancy ,
automatic correction of detected data errors,
Summary of file systems across multiple computers ("pooling") and virtualization ,
larger address volume for data,
Data striping ,

Scaling the test tools,

BitLocker encryption as with NTFS, but no encryption at file level,

File streaming should keep access to the data uninterrupted in the event of partial failures,

Further goals were not discussed in more detail:

Use only for Windows Server version 8 or higher and Windows client version 8.1 or higher,
new access methodology ( store engine ) for reading and writing,
Developed for file servers, so there is no need to use removable media .
No features named streams, object IDs, short names, compression, user data transactions, sparse , hard links , extended attributes and quotas .

criticism

Microsoft regards the characteristics of the NTFS and ReFS file systems and their testing strategy as competitive characteristics and does not disclose them.

A complete specification of the file system is not yet publicly available.
There is no single metric model for comparing performance and security.
A comparative assessment of the file system with regard to security and data throughput is not known.
There is no known reference to the RAID redundancy procedure .