New Task Wizard - Step 4: Advanced Backup Settings (Backup Task)

This page describes the fourth step of creating a backup task with the New Task Wizard.

On the fourth step of the New Task Wizard, you need to select type of backup and versioning options. Advanced users can also change comparison settings and error handling settings (read below).

Selecting type of backup and advanced settings

Type of backup determines the program’s behavior when running backups regularly on a schedule. Taking into account the Store versioned backup option, there are five variants:

  • Full backup copies all files from backup set to selected destination. If target folder already contains some backup files, they are overwritten.
  • Incremental backup compares files in destination and files in backup set, and copies only new and modified files. It is faster than full backup, because existing backups are not overwritten.
  • Full backup with versioning. Each time you run backup, this method creates in destination a new versioned folder (0, 1, 2, etc.) and copies data into it.
  • Incremental backup with versioning. This method is similar to full backup with versioning. Execution of the task creates versioned folders containing only changes, i.e. new and modified files that appeared since the previous backup. Restoration of any version requires you to have a full chain of increments.
  • Differential backup calculates byte-level differences between all files in the backup set and the latest full backup, and then stores them to versioned folders. This type of backup is always versioned, and to restore it you need to have two backups: full and differential. (See also about backing up with time stamps.)
  • Mixed full and differential backup is a combination of a full backup with a chain of differential backups. When the program reaches the end of a chain (defined by a time or by a quantity of differential backups), all chain repeats, starting with a full backup again.

For full backup with versioning, you can click the Versions rotation settings... button to specify how many versions of backups you want to keep.

This dialog can also set a number of mixed backups kept by the program, before considering old mixed backup cycles obsolete.

Managing multiple versions of full backups

Comparison Settings

By default, when running incremental or differential backup, the program will create a new version of file if File size or Modification time attributes are different. Creation time is not checked, because some storage file systems (for example, FTP) don’t have this attribute.

This behavior is task-specific, i.e. it can be different for different tasks. To change it, click the Change button in Comparison settings.

Changing comparison/overwriting settings

Error Handling

Error handling lets you set the program’s behavior when it encounters an error:

  • Critical errors are plug-in specific. For example, failing to initialize Volume Shadow Copy service in MS SQL plug-in is a critical error, while in Computer plug-in it is not.
  • Non-critical errors are one-time errors that are not specific to the entire backup set. For example, the “Access denied” error may be a result of a conflict with another application, and running the same task again will back up the same file successfully.

You can choose whether the task must stop on any error, stop only on critical errors, or don’t stop on errors at all.

Error handling

If there are any errors during backup, the task will end with an Error status.

When finished selecting type of backup and specifying advanced settings, click Next.

Tags: incremental backup

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