What is CAS files in SharePoint?

Jul 09, 2025 · 1 min read

A Content Addressable Storage (CAS) is a type of storage system that is commonly used in SharePoint to store files and data. CAS files in SharePoint are essentially files that are stored in a specialized storage system that uses a unique identifier to locate and retrieve the file. This unique identifier is typically a hash value generated from the content of the file itself.

CAS files in SharePoint offer several advantages over traditional file storage systems. One of the key benefits is that CAS files are highly secure and tamper-proof. Because the unique identifier is generated based on the content of the file, any changes to the file will result in a new unique identifier being generated. This makes it easy to detect any unauthorized changes to files stored in the CAS system.

Another advantage of CAS files in SharePoint is that they are highly scalable. The unique identifier allows for efficient storage and retrieval of files, even when dealing with a large volume of data. This makes CAS files an ideal choice for organizations that need to store and manage a large number of files in SharePoint.

In addition to security and scalability, CAS files in SharePoint also offer improved performance. The unique identifier allows for quick and efficient retrieval of files, reducing the time it takes to access and work with files stored in the CAS system.

Overall, CAS files in SharePoint offer a secure, scalable, and efficient way to store and manage files. By using a content addressable storage system, organizations can ensure the integrity and security of their files while also benefiting from improved performance and scalability.