Cruzer PocketCache is a backup application created exclusively for use with Cruzer USB flash drives from SanDisk Corporation. PocketCache uses a content-based, snapshot backup technology that detects the changes made to files, and then stores these changes in a single archive containing a historical inventory of all backups made. Each snapshot contains 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.
Because PocketCache backs up only changes to designated folders and files, normal backups take only a few seconds. Users can back up hundreds of times onto the same flash drive without having to move data from the drive. Archived files are restored to disk, CD-RW, or DVD-R by a simple "save" operation.