Salta al contenuto principale

Wjat do these files mean?

Thread needs solution
Forum Member
Messaggi: 11
Commenti: 23


I have a Qnap NAS and have taken an image of it to a Win 10x64 PC. ext drive.

I see it has added files since I did it but not sure of the numbers now.

The drive is only 2TB so surely the image cannot be larger than that, or maybe?

When it says 'Full' does it mean that everything before that date can be deleted if one wants to without losing the latest

Full' image?

Also for me to access the image, do I have to put it in a Linux or can I see files etc in the PC.


Thank you


Allegato Dimensione
Qnap True image.JPG 40.79 KB
2 Users found this helpful
Messaggi: 110
Commenti: 29177

David, your image is showing that you have been creating a series of incremental backups that started on 27/04/2021 with an initial full backup image.

Each full backup contains all of the selected source data for the backup task whereas each incremental file contains all changed data captured since the previous backup was created.

Looking at the file sizes, it would appear that your QNAP source has either been changed since this task was first created on 27/04/2021 (615,863,912 KB) to when the next full backup was created on 16/05/2021 (217,033,488 KB), so you have either deleted a lot of data from the QNAP NAS or reduced the data being backed up in some other way.

The recommended method of deleting unwanted backup chains (a set of files sharing the same b? number, i.e. b1 along with the S1, S2, S3 etc incremental files) is to use the Automatic cleanup settings for the backup task, where the option I prefer to use is: 'Store no more than X recent version chains', where X is the number of chains to keep, such that when the X+1 chain is created with a new Full backup file, the oldest chain is deleted automatically.  So in your case, you could set X = 1 and allow Acronis to delete all the B1 chain files when a further backup is created.

See the ATI 2016 User Guide: Backup file naming for more details of the file names.

Forum Member
Messaggi: 11
Commenti: 23

Thank you Steve.

I'm a little puzzled over the big chnage in size and I guess the only way to see is to mount the image.

They are on a Win 10 PC but the image is from Qnap NAS Linux.

What is the best way to mount it?

If I attached a new 2TB drive to the PC, could I mount it that way or does the new empty drive  it have to be attached to a Linux box ?



Forum Hero
Messaggi: 207
Commenti: 5129

I suspect that it is not possible to mount the backup as the file system is not one recognised by Windows. Steve Smith knows more about this sort of thing than I do.


Messaggi: 110
Commenti: 29177

David, if I select my own NAS as the Source for a backup, what I see is a Files & Folders backup listing of source content, not a disk and partitions view, which is as I expected.

Only backups containing partitions can be mounted, and Linux partitions are not handled by Explorer in Windows without the use of third-party utilities to handle the Linux filesystems in use!

So, your QNAP backup will be of Files & Folders, cannot be mounted (no partitions contained) and you can simply double-click on the backup archive file in Explorer to see the contents.

Given the recent malware infecting QNAP NAS devices, check that your data has not been turned into encrypted zip files, and don't delete your older backup files until you understand why there is such a large difference in size?