Acer Extensa 4220 - Manual (Page 62)

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NTI Shadow
NTI Shadow allows users to schedule continuous backup jobs that copy the
contents of one or more folders (the "backup source") to another location (the
"backup destination"). The backup jobs are continuous because they are
scheduled to regularly update the data in the backup folder either continuously
or in user-defined intervals. You can schedule a job to run every certain number
of minutes, on certain days at a specified time, or whenever any data in the
backup source are modified.
Shadow can also be configured to archive file versions. If this option is enabled,
then any file that is saved or overwritten will trigger Shadow to archive the
previous version of the file. The file versions are stored in a Revisions folder in
the backup destination. Users can configure how many versions of a file to
maintain.
Shadow supports backups on local hard drives, USB/FireWire external hard
drives, USB pen drives, NAS devices, and any drive with drive letter access.
Launch the utility is as easy as pressing one buttons. See "Productivity keys" on
page 27 for more information on adjusting the speaker volume.
For more information refer to the NTI Shadow help files.