ReFS Block Cloning started for end users

Windows 11 gets a powerful feature with the 24H2 update: block cloning. This ReFS technology promises to speed up copy processes by up to 92 percent. What is behind this innovation and what effects does it have for users?

Copying on steroids: Windows 11 is getting faster

Windows users can look forward to: With the upcoming autumn update for Windows 11 (version 24H2), a remarkable innovation is coming to the operating system. Microsoft is integrating the so-called block cloning function, which was previously only available in server versions. This technology promises to significantly speed up copying processes – in some cases by up to 92 percent.

Block cloning is part of the Resilient File System (ReFS), which Microsoft developed as a modern successor to the well-known NTFS. Unlike traditional copy operations, block cloning does not physically duplicate data. Instead, the system simply creates a pointer to the original location. This not only saves time, but also optimizes storage space requirements.

Impressive performance increase

How Windows Latest reported, Microsoft demonstrated the power of block cloning back in May a comparison table. Accordingly, a 10 GB file could be copied in just half a second with ReFS – a process that took just under 8 seconds with NTFS. There were noticeable speed advantages even with smaller files. Despite its impressive performance, ReFS is not suitable for every use case.

Microsoft is positioning the file system primarily for developers and managed PC environments. An important note for end users: ReFS cannot currently be used for boot drives. This means that the operating system itself must still be installed on an NTFS formatted drive.

Advantages of ReFS

In addition to speed, ReFS offers other advantages:

• Increased reliability through multiple data backups
• Regular integrity checks
• Better scalability for large amounts of data

These features make ReFS particularly attractive for environments where data security is a top priority, such as in data centers or when managing large data sets.

NTFS therefore remains important

NTFS will not become obsolete despite the advantages of ReFS. The proven file system still offers some functions that ReFS does not cover. These include, for example, the independent compression and storage of files as well as the encryption of data at the hardware level.

Importance for users and outlook

The integration of block cloning in Windows 11 marks a significant step in the evolution of the operating system. It shows that Microsoft is continually working to improve the performance and efficiency of its flagship operating system. At the same time, it highlights the increasing convergence between consumer and professional technologies.

For the average user, this innovation means, above all, a noticeable time saving during extensive copying processes. Users who regularly work with large files, for example in video production or data analysis, could particularly benefit from the new function.