Acronis True Image 2015 - User Guide - Manual (Page 46)

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3. Click Options, open Schedule tab, then click Monthly and specify, for example, the 1st and 15th
days of the month. This will result in a backup version in about every 2 weeks. Then specify a
start time for the backup operation.
4. Open the Backup scheme tab, and then choose Custom scheme instead of Incremental scheme.
5. In the Backup method box, select Differential from the drop down list.
6. Click Create a full version after every [n] differential versions, and type or select "3".
In that case the program will first create the initial full backup version (no matter how you set up
a backup process, the first backup version will always be the full one), and then 3 differential
versions, each one in about two weeks. Then again a full version and 3 differential versions and
so on. So every new full version will be created in two months.
7. To limit storage space for the versions, click Turn on automatic cleanup.
8. Click Keep size of the backup no more than [defined size], type or select "100" "GB", and click
OK.
When the total backup size exceeds 100 GB, Acronis True Image 2015 will clean up the existing backup
versions to make the remaining versions satisfy the size limit. The program will delete the oldest backup
chain consisting of a full backup version and 3 differential backup versions.
9. In the Disk Backup window, check that all settings are correct and click Back up now. If you want
your first backup to be run only at the time you specified in the Scheduler, click the down arrow
to the right of the Back up now button and select Later in the drop down list.
4.3.3 Notifications for backup operation
Sometimes a backup or recovery procedure can last an hour or longer. Acronis True Image 2015 can
notify you when it is finished via email. The program can also duplicate messages issued during the
operation or send you the full operation log after operation completion.
By default all notifications are disabled.
Free disk space threshold
You may want to be notified when the free space on the backup storage becomes less than the
specified threshold value. If after starting a backup Acronis True Image 2015 finds out that the free
space in the selected backup location is already less than the specified value, the program will not
begin the actual backup process and will immediately inform you by displaying an appropriate
message. The message offers you three choices - to ignore it and proceed with the backup, to browse
for another location for the backup or to cancel the backup.
If the free space becomes less than the specified value while the backup is being run, the program
will display the same message and you will have to make the same decisions.
To set the free disk space threshold:

Select the Show notification message on insufficient free disk space check box

In the Size box, type or select a threshold value and select a unit of measure
Acronis True Image 2015 can monitor free space on the following storage devices:

Local hard drives

USB cards and drives

Network shares (SMB/NFS)
The message will not be displayed if the Do not show messages and dialogs while processing (silent mode)
check box is selected in the Error handling settings.