Method and apparatus for backup in restoring data on a computer system are disclosed. Backups may include a differential backup. In a differential backup, only some (but not all) segments of data in a primary copy are backed up. The segments may correspond to physical segments of storage in a storage...http://www.google.de/patents/US20020059505?utm_source=gb-gplus-sharePatent US20020059505 - Method and apparatus for differential backup in a computer storage system
Method and apparatus for differential backup in a computer storage system
