O&O Defrag is available in three versions:
- O&O Defrag Professional Edition
- O&O Defrag Workstation Edition
- O&O Defrag Server Edition
The Professional Edition is the version to use for defragmenting a single PC. It cannot be used on a server operating system.
The Workstation Edition is the version to use for defragmenting a single PC. It cannot be used on a server operating system.
The Server Edition can be used on both Servers and Workstations, the latter making more sense when the administrator wishes to control and monitor the defragmentation process from his computer.