Diskeeper 10 User's Manual

72 Diskeeper and Group Policy
Running at the lowest priority minimizes the system performance impact when Diskeeper is defragmenting a
disk volume. However, defragmentation jobs running at the lowest priority can take substantially longer to
complete than those running at higher priorities, since Diskeeper “backs off’ for any process running at a higher
priority (even screen savers).
Defragmentation Method
These settings determine the type of defragmentation to perform for each of these defragmentation job types:
• Primary Defragmentation Jobs
• Secondary Defragmentation Jobs
• Manual Defragmentation Jobs
When this policy is enabled, the method defined here will apply to all computers. When this policy is either
disabled or not configured, the defragmentation method established locally will be followed. These
defragmentation methods are available:
Quick Defragmentation — This method provides the fastest defragmentation. It reduces the defragmentation
time by placing the emphasis on defragmenting the fragmented files, rather than free space consolidation, since
this returns the greatest system performance gain. This defragmentation method will complete faster and use
fewer resources, but note that the free space consolidation will not be as thorough as the other methods.
Recommended Defragmentation — This is the default, proven and balanced mix of file defragmentation and
free space consolidation. It is designed to gain the best disk performance without using excessive system
resources.
Comprehensive Defragmentation — This defragmentation method performs additional free space
consolidation. This method performs a normal Diskeeper defragmentation, but then additionally performs extra
processing to further improve free space consolidation. It is important to note this method requires additional
processing and time, and free space consolidation improvement will be gradual as the option is used over time.
Since the Comprehensive Defragmentation method is best suited for scheduled defragmentation jobs, it is not
available for Manual Defragmentation Jobs.
In addition to each of these defragmentation methods, you can alternately enable and disable the Efficiently
defragment large files option for each job type.
Power Management
This option is intended primarily for laptop and portable computers.
When this option is enabled and the computer is running on battery power, any scheduled defragmentation jobs
are postponed, and a message noting this is written to the Windows Application Event Log. If a
defragmentation job is started manually when this option is enabled (and the computer is running on battery
power), a message is displayed asking if you want to continue, even though running Diskeeper on battery
power may reduce the available battery time.
When this option is enabled and the computer switches from normal power to battery power, any ongoing
scheduled analysis or defragmentation jobs are safely stopped and a message noting this is written to the
Windows Application Event Log. If Diskeeper is running manually and the computer switches to battery power
when this option is enabled, a message is displayed informing you that Diskeeper has stopped running.
When this policy is enabled, the Power Management feature will be turned on for all computers. When this
policy is not configured, the setting established locally will be followed.
When this policy is disabled, the Power Management feature will be turned off for all computers.
System Tray Defragmentation Delay
This policy allows non-administrative users to use the Diskeeper icon in the system status area (also known as
the system tray) to postpone defragmentation operations.