Content replication is a new type of backup and archiving technology that backs up stored data by detecting changes in file contents and capturing these changes in storage-efficient "snapshots." All Kadena applications, including PocketCache™ and DeltaBack™, use this patent-pending technology.

Content-based backups are smaller, faster, easier-to-manage, and significantly more storage-efficient than backups created by conventional methods. Each snapshot identifies content changes, and store these changes in a “content” pool that is shared by backups in a comprehensive archive. Sharing has the added benefit of eliminating redundant data among stored backups and reduces backup storage, on average, by about 35-40 percent. Due to exceptional backup efficiencies, contents snapshots can be performed hundreds or thousands of times or more, without exceeding the capacity of the drive or storage system.

Today, conventional backup methods include image-based backup, file-level incremental backup, and file-system based snapshot backups. File-system based snapshot backup is similar, though not as efficient, as content-based backup; file system snapshots also work with a specific file system that requires installation with the snapshot application. By comparison, content-based backup is based on a small application that does not depend on a particular file system.

Content-based backup is also significantly easier to manage than other backup alternatives. By comparison, it is the only backup method that is truly practical for personal and mobile backup applications. Content-based backups are so fast and storage-efficient, that the user only needs to decide what he or she needs to back up, and from that point forward, invoke backup on a regular basis. Each snapshot is retained in a comprehensive archive containing a complete view of folders and files at the time of backup, making it easy to find, access and restore current and earlier versions of files. Archived files can be restored to disk, CD-RW, DVD-R or central server with a simple “save” operation.

Technical Information