User's Manual

Table Of Contents

4.5.7.1 Edit user command for backup

You can specify user commands to be executed before or after the backup procedure:

 In the Command field, type-in a command or select it from the list. Click ... to select a batch file.

 In the Working directory field, type-in a path for command execution or select it from the list of

previously entered paths.

 In the Arguments field enter or select command execution arguments from the list.

Disabling the Do not perform operations until the command's execution is complete parameter

(enabled for Pre commands by default), will permit the backup process to run concurrently with your

command execution.

The Abort the operation if the user command fails (enabled by default) parameter will abort the

operation if any errors occur in command execution.

You can test a command you entered by clicking the Test command button.

4.5.8 Backup splitting

Location: Options > Advanced > Backup splitting

Acronis True Image 2021 cannot split already existing backups. Backups can be split only when being created.

This option is not available for the backups that use Acronis Cloud as a backup destination.

Large backups can be split into several files that together make up the original backup. A backup can

also be split for burning to removable media.

The default setting - Automatic. With this setting, Acronis True Image 2021 will act as follows.

When backing up to a hard disk:

 If the selected disk has enough space and its file system allows the estimated file size, the

program will create a single backup file.

 If the storage disk has enough space, but its file system does not allow the estimated file size, the

program will automatically split the image into several files.

 If you do not have enough space to store the image on your hard disk, the program will warn you

and wait for your decision as to how you plan to fix the problem. You can try to free some

additional space and continue or select another disk.

When backing up to a CD-R/RW, DVD-R/RW, DVD+R/RW, BD-R/RE:

 Acronis True Image 2021 will ask you to insert a new disk when the previous one is full.

Alternatively, you may select the desired file size from the drop-down list. The backup will then be

split into multiple files of the specified size. This is useful when you store a backup to a hard disk in

order to burn the backup to CD-R/RW, DVD-R/RW, DVD+R/RW or BD-R/RE later on.

Creating images directly on CD-R/RW, DVD-R/RW, DVD+R/RW, BD-R/RE might take considerably more time

than it would on a hard disk.

4.5.9 Backup validation option

Location: Options > Advanced > Validation

This option is not available for the backups that use Acronis Cloud as a backup destination.