When the NetBackup master server is configured to perform a full backup, NetBackup
backs up all files in a specified folder or volume to a storage unit. The archive bit is cleared
as each file is backed up. If the full backup fails, NetBackup will attempt another full
backup at the same time each day until successfully completed. A successfully completed
backup will include all files.
The NetBackup administrator can schedule full backups and incremental backups to
occur automatically and unattended, under the control of the NetBackup master server.
Full, incremental, and true image backups can only be performed by the NetBackup
master server. When properly scheduled, the server-directed backups will meet most of
your backup requirements.
Cumulative-Incremental Backup
When the NetBackup master server is configured to perform a cumulative-incremental
backup, NetBackup backs up all files that have changed since the last successful full
backup.
Cumulative-incremental backups can be configured to use either the datetime stamp or
the archive bit. If the datetime stamp is used, the cumulative-incremental backup includes
all files with a datetime stamp that is more recent than the last full backup. If the archive
bit is used, the cumulative-incremental backup includes all files that have their archive bit
set. Archive bits are not cleared on cumulative-incrementals. Refer to “General Tab” on
page 62 for more details on performing incremental backups with archive bits.