A backup computer storage system that protects and/or recovers data on a primary computer storage system is disclosed. The backup computer system may be used to backup databases, files, and/or applications. In some embodiments, the backup system may be used to backup an image of the primary computer storage system. In other embodiments, the backup system may be used to backup one or more databases, replicate an image of data that is on the primary computer storage system, restore data from the backup system to the primary computer storage system, restore data to a database while non-affected portions of the database are available and can be used, record all transactions in real time without overwriting any previously stored backup data, and maintain historical and/or chronological information related to backed up data.