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Task not doing differential but full backup

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Hello,
I am using Acronis True Image Home 2011 14.0.0 Build 6574 on my Windows 7 Professional 64Bit desktop and setup a backup task everyday at 14:00 to do a Differential backup, but everyday it does a Full backup instead of Differential backup.

I am not using any disk difrag softwares or anything else that could interfere. Also it did do the first backup(full) successfully but still no differential backup the next day.

I have deleted the task and create new task with the same settings but still the same issue.

Please advice.

thank you

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This is how your backup scheme should appear except change the example of 6 and 4 to fit your needs.
If any backup are being created manually, be sure to utilize the existing task and only click the "backup now" from inside the specific task.
The info below is an extract from my signature link 2 below.

Figure 11-Dif: -Example of custom/differential backup method settings

If using differential type backups (which is full + X Diff), the 11-Diff illustration is my recommended method. Change the 6 or 4 to fit your available storage.
These automatic cleanup settings will provide for automatic deletion of the oldest backups after the "Store no more than X number of chains" quota has been reached.
In this example, deletion of oldest backup chain will occur immediately following creation of backup #29.

Allow space for 1 more full backup in addition to "Store no more than X number of chains" as the program will NOT delete the oldest full until its replacement has been successfully created.

In this example, one chain or one recent version chain =1 full plus 6 diff or 7 files per chain.
If keeping 4 recent version chains (4 chains of 7 each) retention would be 28 files. Deletion begins after backup 29.

When restoring, a single diff file is selected and that specific diff plus its full backup base will be restored (2 files restored).

Hi,
thanks for your quick reply, appreciate it.

I will try to use your method.

the strange thing is that I have been always using the same method as I am doing now, create the task, let it make a full backup first and followed by differential. But for some reason it doesn't want to work on this occasion.

I will give it a try.

thank you

Hi,
Thank you for your advice, all is well now.
Now its performing Differential backup.

Appreciate it.

all the best

Great! Thank you for posting your resuts.
Merry Christmas.