5 manual start – Acronis Backup for PC - User Guide User Manual
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Copyright © Acronis International GmbH, 2002-2014
Number of
levels
Full backup
every
On different
days, can go
back
Roll-back
period
2
2 days
1 to 2 days
1 day
3
4 days
2 to 5 days
2 days
4
8 days
4 to 11 days
4 days
5
16 days
8 to 23 days
8 days
6
32 days
16 to 47 days
16 days
Adding a level doubles the full backup and roll-back periods.
To see why the number of recovery days varies, let us return to the previous example.
Here are the backups we have on day 12 (numbers in gray denote deleted backups).
1
2
3
4
5
6
7
8
9
10
11
12
4
1
2
1
3
1
2
1
4
1
2
1
A new level 3 differential backup has not yet been created, so the backup of day five is still stored.
Since it depends on the full backup of day one, that backup is available as well. This enables us to go
as far back as 11 days, which is the best-case scenario.
The following day, however, a new third-level differential backup is created, and the old full backup is
deleted.
1
2
3
4
5
6
7
8
9
10
11
12
13
4
1
2
1
3
1
2
1
4
1
2
1
3
This gives us only a four day recovery interval, which turns out to be the worst-case scenario.
On day 14, the interval is five days. It increases on subsequent days before decreasing again, and so
on.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
4
1
2
1
3
1
2
1
4
1
2
1
3
1
The roll-back period shows how many days we are guaranteed to have even in the worst case. For a
four-level scheme, it is four days.
4.2.6.5
Manual start
With the Manual start scheme, you do not have to specify the backup schedule. You can run the
backup plan from the Plans and Tasks view manually at any time afterwards.
Specify the appropriate settings as follows.
Backup type
Select the type of backup
Full - selected by default for all backup locations (except for Acronis Cloud Storage).
Incremental. At the first time a full backup will be created. The next backups will be
incremental. Selected as the one and only backup type for Acronis Cloud Storage.
Differential. At the first time a full backup will be created. The next backups will be
differential.