User`s guide

To specify the compression level

Select one of the following:

 None – the data will be copied as is, without any compression. The resulting backup size will be

maximal.

 Normal – recommended in most cases.

 High – the resulting backup size will typically be less than for the Normal level.

 Maximum – the data will be compressed as much as possible. The backup duration will be

maximal. You may want to select maximum compression when backing up to removable media

to reduce the number of blank disks required.

3.3.1.9 Backup performance

Use this group of options to specify the amount of network and system resources to allocate to the

backup process.

Backup performance options might have a more or less noticeable effect on the speed of the backup

process. This depends on the overall system configuration and the physical characteristics of devices

the backup is being performed from or to.

Backup priority

This option is effective for both Windows and Linux operating systems.

The priority of a process running in a system determines the amount of CPU and system resources

allocated to that process. Decreasing the backup priority will free more resources for other

applications. Increasing the backup priority might speed up the backup process by requesting the

operating system to allocate more resources like the CPU to the backup application. However, the

resulting effect will depend on the overall CPU usage and other factors like disk in/out speed or

network traffic.

The preset is: Low.

To specify the backup process priority

Select one of the following:

 Low – to minimize resources taken by the backup process, leaving more resources to other

processes running on the machine

 Normal – to run the backup process with normal speed, allocating resources on a par with other

processes

 High – to maximize the backup process speed by taking resources from other processes.

HDD writing speed

This option is effective for Windows and Linux operating systems and bootable media.

This option is available when an internal (fixed) hard disk of the machine being backed up is selected

as the backup destination

Backing up to a fixed hard disk (for example, to Acronis Secure Zone) may slow performance of the

operating system and applications because of the large amounts of data that needs to be written to

the disk. You can limit the hard disk usage by the backup process to the desired level.