Performance of backup operation

Compression level

You can choose the compression level for a backup:

• None - the data will be copied without any compression, which may significantly increase the backup file size.
• Normal - the recommended data compression level (set by default).
• High - higher backup file compression level, takes more time to create a backup.
• Maximum - maximum backup compression, but takes a long time to create a backup.

The optimal data compression level depends on the type of files stored in the backup. For example, even maximum compression will not significantly reduce the backup size, if the backup contains essentially compressed files, like .jpg, .pdf or .mp3.

You cannot set or change the compression level for a pre-existing backup.

Operation priority

Changing the priority of a backup or recovery process can make it run faster or slower (depending on whether you raise or lower the priority), but it can also adversely affect the performance of other running programs. The priority of any process running in a system, determines the amount of CPU usage and system resources allocated to that process. Decreasing the operation priority will free more resources for other CPU tasks. Increasing backup or recovery priority may speed up the process by taking resources from the other currently running processes. The effect will depend on total CPU usage and other factors.

You can set up the operation priority:

• Low (enabled by default) - the backup or recovery process will run slower, but the performance of other programs will be increased.
• Normal - the backup or recovery process will have the equal priority with other processes.
• High - the backup or recovery process will run faster, but the performance of other programs will be reduced. Be aware that selecting this option may result in 100% CPU usage by Acronis True Image.

Network connection transfer rate

When you back up data to Acronis Cloud, network drives, or FTP, you can change the connection speed used by Acronis True Image. Set the connection speed that will allow you to use Internet and network resources without annoying slowdowns.

To set up the connection speed, select one of the following options:

• Optimal

  The data transfer rate is not changed by Acronis True Image.

• Maximum (available for online backups only)

  This option significantly speeds up the upload process, but at the same time the Internet connection speed decreases for other applications. The optimization mechanism splits the data into small portions, and then uploads these portions via multiple network connections. In the target Acronis data center, the split data is assembled back to the initial state, and then stored in the cloud storage.

• Limit upload speed to

  You can specify a maximum value for data upload speed.