User Guide

Table Of Contents

Before/after data capture commands can also be used for purposes different from

suspending the database, especially if VSS support is enabled. You may want to suspend an

application other than a database, for example. The commands execution and the VSS

actions will be sequenced as follows:

“before” commands -> VSS Suspend -> data capture -> VSS Resume -> “after” commands.

Unchecking the Do not perform operations until the commands execution is

complete box, checked by default, will permit the backup process to run concurrently with

your commands execution.

6.3.5 Compression level

The default setting – Normal.

If you select None, the data will be copied without any compression, which may significantly

increase the backup file size. However, if you select Maximum compression, the backup will

take longer to create.

The optimal data compression level depends on the type of files stored in the archive. For

example, even maximum compression will not significantly reduce the archive size if the

archive contains essentially compressed files, like .jpg, .pdf or .mp3.

Generally, it is recommended that you use the default Normal compression level. You might

want to select Maximum compression for removable media to reduce the number of blank

disks required.

6.3.6 Backup performance

The three options below might have a more or less noticeable effect on the backup process

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

1. Backup process priority

The default setting – Low.

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

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

resources for other CPU tasks. Increasing the backup priority may speed up the backup

process due to taking resources from the other currently running processes. The effect will

depend on total CPU usage and other factors.

2. HDD writing speed

The default setting – Maximum.

Backing up in the background to an internal hard disk (for example, to Acronis Secure Zone)

may slow other programs’ performance because of the large amounts of data transferred to

the disk. You can limit the hard disk usage by Acronis True Image Enterprise Server to a

desired level. To set the desired HDD writing speed for data being backed up, drag the slider

or enter the writing speed in kilobytes per second.

3. Network connection speed

The default setting – Maximum.