Acronis Backup for PC - User Guide - Manual (Page 88)

88 Copyright © Acronis International GmbH, 2002-2014
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Use the setting set in the Machine options – to use the setting specified for the machine. For
more information refer to Machine options.
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Log the following event types – to log events of the backup operations in the Application Event
Log. Specify the types of events to be logged:

All events – log all events (information, warnings and errors)
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Errors and warnings
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Errors only
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Do not log - to disable logging events of the backup operations in the Application Event Log.
4.7.11 Fast incremental/differential backup
The option is effective in Windows and Linux operating systems and bootable media.
This option is effective for incremental and differential disk-level backup.
This option defines whether a file change is detected using the file size and time stamp or by
comparing the file contents to those stored in the archive.
The preset is: Enabled.
Incremental or differential backup captures only data changes. To speed up the backup process, the
program determines whether a file has changed or not by the file size and the date/time when the
file was last modified. Disabling this feature will make the program compare the entire file contents
to those stored in the archive.
4.7.12 File-level backup snapshot
This option is effective only for file-level backup in Windows and Linux operating systems.
This option defines whether to back up files one by one or by taking an instant data snapshot.
Note: Files that are stored on network shares are always backed up one by one.
The preset is: Create snapshot if it is possible.
Select one of the following:
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Always create a snapshot
The snapshot enables backing up of all files including files opened for exclusive access. The files
will be backed up at the same point in time. Choose this setting only if these factors are critical,
that is, backing up files without a snapshot does not make sense. To use a snapshot, the backup
plan has to run under the account with the Administrator or Backup Operator privileges. If a
snapshot cannot be taken, the backup will fail.

Create a snapshot if it is possible
Back up files directly if taking a snapshot is not possible.
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Do not create a snapshot
Always back up files directly. Administrator or Backup Operator privileges are not required.
Trying to back up files that are opened for exclusive access will result in a read error. Files in the
backup may be not time-consistent.