Backup Definition: Overview
To back up data, create a backup definition. A backup definition is required for simple one-time backups as well as for complex, regularly scheduled backups. Once the backup definition has been specified, you must save it as a backup job.
The backup definition specifies the following:
Mode
The method for transferring backup data: Block, Agentless VMware, NDMP, Image, File.
Source
The data to be backed up.
Destination
The devices or device paths and media to which the data is backed up.
Source Options, Destination Options, and Job Notification Options
File Exclusion Rules
Rules describing classes of files to be excluded from the backup source set. If you do not set these rules at backup time, DPX uses the defaults you set during configuration.
Schedule
The time and frequency of the backup. The schedule also allows you to specify a base/incremental/differential backup scheme. You can save and manually run a job without defining a schedule.
The following are the steps required for creating a backup definition:
DPX supports three types of backups: base, differential, and incremental. You set this when you specify a backup schedule or before you run a backup job.
Note that for DPX 4.4.3 and later, for Windows operating systems, the Recovery Partition is always backed up as a base backup in order to improve space handling.
The following defines the three backup types:
Base
Backs up all the files on the specified nodes.
Differential
Backs up all the files on the specified nodes that have changed since the last base backup of the same name.
Incremental
Backs up files on the specified nodes that have changed since the last base or incremental backup with the same name.
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