Space Reclamation

The Space Reclamation feature writes zeros to unused blocks of free space on your volumes allowing for the reclaiming of that space from within your environment. Although Diskeeper can write zeros to unused blocks of free space on your volumes, it cannot however, compact a volume.

Note: Space Reclamation is only available on Server editions of Diskeeper.

Automatic Space Reclamation

Automatic Space Reclamation allows Diskeeper to automatically zero out unused free space when enabled on selected volumes. Using InvisiTasking and CogniSAN technologies, Diskeeper can perform Space Reclamation without any negative performance impact to your environment.

When automatic Space Reclamation is enabled on a volume, you can optionally use the Automatic File System Performance Timeline control to specify times when automatic Space Reclamation and Automatic Defragmentation will not be allowed to run. (This exclusion timeline is honored by BOTH Automatic Space Reclamation and Automatic Defragmentation at the same time).

Keep in mind that both Automatic Space Reclamation and Automatic Defragmentation, with the exclusive InvisiTasking and CongniSAN technologies, work invisibly in the background, and will not negatively impact other processes on the system.

Note: When Automatic Defragmentation is not enabled on a volume, fragmentation increases, and performance suffers. For this reason, specifying a time for Automatic Defragmentation to not run is comparable to specifying a time when you want your computer’s performance to be less optimum. If you exit from Diskeeper (or even log off your computer) while Automatic Defragmentation is running, it will continue running as needed.

Automatic File System Performance Timeline

This timeline is accessible from the Volume tab of the Advanced Configuration Settings screen.

Using this timeline, you can turn Automatic Defragmentation and Space Reclamation on or off based on a weekly pattern, or based on specific dates you choose.

Note: settings are only applicable on volumes where Automatic Defragmentation and/or Space Reclamation are enabled.

Also Note: this timeline is shared by Automatic Defragmentation and Space Reclamation.

Since Diskeeper runs unnoticed in the background, there usually is no need to turn it off. However, for rare cases such as benchmarking where you do not want the benefits from IntelliWrite or Automatic Defragmentation to skew the results, you must disable IntelliWrite and Automatic Defragmentation for the applicable time needed for benchmarking. Although IntelliWrite must be manually disabled, the timeline allows you to specify exclusion periods when Automatic Defragmentation and Space Reclamation will be turned off.

The colored horizontal bars in the timeline represent periods of time, and the colors show periods when Automatic Defragmentation is turned on or off. In cases where more than one volume has been selected, any conflicting exclusion periods are displayed in a separate color as shown in the legend at the bottom of the timeline display. These time periods are shown in the timeline as "mixed settings".

You can turn Automatic Defragmentation on or off based on a weekly pattern, or based on specific dates you choose. When the weekly pattern option is chosen, the timeline shows a full week in one-hour increments. When the specific date option is chosen, use the calendar control to specify one or more days to display in the timeline.

After selecting the range of time displayed in the timeline, left-click and drag your cursor on any of the segments in the display to alternately enable and disable Automatic Defragmentation and Space Reclamation for that time period. You can quickly select any time span from a single hour to several days at once.

Use the Options button at the bottom of the timeline to include or exclude all of the time period shown in the timeline, to change between a 12-hour and 24-hour clock, and to customize the color used to show the exclusion period.