Back up terminologies #3

• Flash Backup
  A term used for raw partition backup used by NetBackup Advanced Client. In NBAC, support is limited to the VxFS (Veritas), ufs (Solaris), Online JFS (HP-UX) and NTFS (Windows) filesystem types. Similar to the UNIX utility dump.
• Full backup
  A backup of all (selected) files on the system. In contrast to a drive image, this does not include the file allocation tables, partition structure and boot sectors.
• Hot backup
  A backup of a database that is still running and so changes may be made to the data while it is being backed up. Some database engines keep a record of all entries changed, including the complete new value. This can be used to resolve changes made during the backup.
• Incremental backup
  A backup that only contains the files that have changed since the most recent backup (either full or incremental). The advantage of this is quicker backup times, as only changed files need to be saved. The disadvantage is longer recovery times, as the latest full backup, and all incremental backups up to the date of data loss need to be restored.
• Media spanning
  Sometimes a backup job is larger than a single destination storage medium. In this case, the job must be broken up into fragments that can be distributed across multiple storage media.
• Multiplexing
  The practice of combining multiple backup data streams into a single stream that can be written to a single storage device. For example, backing up 4 PCs to a single tape drive at once.
• Multistreaming
  The practice of creating multiple backup data streams from a single system to multiple storage devices. For example, backing up a single database to 4 tape drives at once.
• Normal backup
  Full backup used by Windows Server 2003.
• Near store
  Provisionally backing up data to a local staging backup device, possibly for later archival backup to a remote store device.
• Open file backup
  The ability to back up a file while it is in use by another application. See File locking.