Acronis True Image Data Protection

Acronis True Image is a software product produced by Acronis that provides data protection for personal users including, backup, archive, access and recovery for. Mar 18, 2021 Acronis True Image is an easy-to-use and robust online backup solution for protecting files and disk images in the cloud. Acronis True Image Premium Product Highlights: Easily backup everything in your system from data to operating system, files, disk, etc. Smart scheduling of backups so you won’t miss anything important; Safer system with True Image Premium’s dual protection feature backs up your data locally and on cloud; 1 terabyte Cloud Storage.

Acronis True Image supports file and disk backups. File backup and disk backup are very different in nature. While file backup operates with files, disk or partition backup operates on the sector level.


Hard disks consist of sectors. Sector is the smallest storage unit on a disk, usually 512 bytes in size. Operation system stores files in sectors according to its rules and they are not always straightforward and obvious. This means that the size of all backed up files may not be equal to the size of all data in backed up sectors.

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Why does the amount of selected data differ from the data in a backup?

There are 3 main reasons:

  1. Files are compressed by the filesystem. NTFS supports native file compression, which allows saving disk space.
  2. Sparse files. Such files have so-called sparse areas which consist of zeroes. Operation System does not allocate sectors for such areas until they are actually written by an application. In this case files may have larger virtual size than sum of sectors they reside in.
  3. Hard links. This is a way for filesystem to use the same sectors for several files with different paths.

In all these cases file sizes are greater than the size of data in sectors these files reside in. When a system disk is backed up locally as a disk or a partition, Acronis True Image backs up sectors, not files. Such cases may lead to unclear result like one on the following screenshots.

’Data size’ is way greater than ’Data selected’

  • ’Data selected’ is disk used space. It considers only disk level (sectors occupied) and does not respect any excludes (neither True Image, nor VSS excludes).
  • ’Data size’ is the total size of all files in the backup. It is equal to the sum of all sections of the statistics line.

’Backed up’ is less

  • ’Backed up’ is the size of data backed up sector-wise in this slice.
  • ’Data to recover’ is the number of bytes that will be restored from this slice. The number is equal to ’Backed up’ because it was a Full Backup (if it was an Incremental slice these numbers would differ).

The size of the .tib (or .tibx) file is usually less than ’Backed up’ because Acronis True Image uses its own compression.

'System data'

Acronis True Image marks as 'System' the contents of these folders on any disk selected for the backup:

For Windows:

For macOS:
/Library (excluding /Library/Application Support)

For example, a 'Boot' folder can reside on a hidden EFI partition and you are not able to check its size from Windows Explorer. Or you back up several disks, and one of them contains a folder named 'Windows' which is not C:Windows, but this data is still marked as 'System' in Acronis True Image.

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Moreover, the folder could contain hidden files or files that change in size (for example, system logs) over time.

Discrepancy is expected in these cases.


In 2016 release Acronis True Image Cloud introduces Online Dashboard - a unified cross-platform solution that allows you to track and control the protection status of all computers, smartphones, and tablets sharing one Acronis account.

Online Dashboard is a web-based console, which is accessible from any computer connected to the Internet. With this web application, your family IT administrator can:

  • Control the current statuses of all backups and synchronizations on all family devices running Windows, Mac OS X, iOS, and Android.
  • Manually start any backup on any computer.
  • Recover data from any backup located in Acronis Cloud, including backups from PCs, Macs, and devices running iOS and Android.

Accessing the Online Dashboard

You can access the Online Dashboard:

  • by opening
  • by clicking Browse Devices in your account on Acronis website
  • by clicking Open Online Dashboard in the product interface

Adding a new device to the Online Dashboard

  1. On the device that you want to add, open Online Dashboard at:
  2. Sign in with your Acronis account.
  3. On the Devices tab, click Add device.
  4. Download and install Acronis True Image.
  5. Start Acronis True Image and sign in to the same Acronis account.

Monitoring backups with Online Dashboard

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Control the status of your devices' protection:

Backing up with Online Dashboard

Using the Online Dashboard, you can run a custom backup plan created on the computer:

Recovering with Online Dashboard

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Using Online Dashboard you can access and recover data of all devices protected using one account.


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  1. On the Devices tab, find the device that is the source of the data that you want to recover. If the device is offline, make sure that it is turned on and connected to the Internet.
  2. Click Recover.
  3. On the left panel, select the backup version by the backup date and time.
  4. On the right panel, select the check boxes next to the files and folders that you want to recover.
  5. Click Download.