Disk Assisted Back-Up White Paper: Backup to Disk and How to Implement It with HP Data Protector

Disk Assisted Back-Up White Paper
Backup to Disk and how to implement it with HP Data Protector
Overview............................................................................................................................................ 2Reduced recovery time ......................................................................................................................... 2Improved backup performance.............................................................................................................. 3Increased success rate of backups completed.......................................................................................... 3No or reduced need for multiplexing of backups to tape .......................................................................... 4Branch office backup consolidation ....................................................................................................... 4Object consolidation............................................................................................................................ 5Backup to disk implementation with HP Data Protector ............................................................................. 6Overview........................................................................................................................................ 6Synthetic full backup and virtual full backup............................................................................................ 6Synthetic full backup......................................................................................................................... 6Virtual full backup ............................................................................................................................ 6How does virtual full position against synthetic full?.............................................................................. 7How HP Data Protector synthetic backup works ................................................................................... 7How HP Data Protector synthetic backup restore works......................................................................... 8Distributed file media format (DFMF) .................................................................................................. 9HP Data Protector 6.0 object consolidation prerequisites .................................................................... 10Command Line details .................................................................................................................... 10Object consolidation details in HP Data Protector GUI........................................................................ 11HP Data Protector File Library and Object Copy.................................................................................... 15HP Data Protector Jukebox and Standalone file device ........................................................................... 25For more information.......................................................................................................................... 30Overview
Advancements in technology and price reductions have recently made it possible to use disk togetherwith tape to improve data protection. Some of the benefits that the technology promises are:?Reduced recovery time?Improved backup performance?Increased success rate of backups completed?No or reduced need for multiplexing of backups to tape?Branch office backup consolidation
With shrinking backup windows and increasing amounts of data, users are adding more tape drivesand implementing faster backup network topologies, including storage area networks (SANs). But forcost reasons, and in distributed environments, users cannot have every host on the SAN. Nor can theyimplement a direct-attached tape device to every host. The administration and ongoing managementwould be difficult and inefficient. In this type of environment, backup to disk can help. Backup to diskis essentially the process of backing up data to a disk device rather than to tape. Backups are thencopied to tape for long-term storage and disaster recovery.Combining disk and tape for backup is not necessarily a cheaper solution than using tape only, andto completely stop running backups to tape may be a risk. In any case, it is well worth the time andeffort to investigate how using disk in addition to tape could potentially give you a better backup andrestore solu... [download for more]