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Defraggler options - Defrag tab

Defraggler Defrag Options

Note: For details about the Do not move 'Large Files' during Defrag Freespace option, see this topic.

Hard drives are fastest at the beginning of the drive, and slowest at the end of the drive. That means that you'll get the best performance from your PC if your most-used files are placed at the beginning of the drive.

Defraggler enables you to move large files to the end of the drive. Typically these large files are video or storage files, so they're not used very often. By moving them to the end of the drive, you're freeing up 'fast space' for files you use far more often. You can control which types of files and what sizes of files Defraggler moves.

  • To set Defraggler to move larger files to the end of your hard drive, select Move large files to end of drive. This enables the remaining settings in this tab.
  • To set the minimum size of files that Defraggler will move, type a number (in megabytes, or MB) in the Minimum file size dialog box. The default is 250MB.
  • To specify which large files Defraggler should move, select Move only selected file types. This enables the Category and File Types area.

In this example, we'll add VMDK files as file types we'd like Defraggler to move to the end of the drive. VMDK stands for VMWare Virtual Machine Drive files. This is only an example - if you use VMDK files, you would have to make the determination as to how frequently they are used.

To add a VMDK file type for Defraggler to move:

  1. Select Move large files to end of drive.
  2. Select Move only selected file types.
  3. Click Add.
  4. In the Add Category dialog box, type a name for the category ("VMDK files," for example).
  5. In the File extensions box, type the file extension (*.VMDK). If these types of files had more than one extension, you'd insert a pipe symbol | followed by the next extension. This would look like:
    *.VMDK | *.XYZ
  6. Click Add.

You can modify and delete existing Category entries using the Edit and Remove buttons. Click OK once you have finished making changes on this tab.

Note: If you select Move large files to end of drive but do not specify file types, Defraggler will attempt to move all files equal to or larger than the size in the Minimum file size text box.