D-Link DSN-500 Software User's Manual page 71

You can use one of the following methods to display advanced extent information in the
Extents tab for the selected volume:
On the Volumes menu, check Show Advanced Extents.

Check Show Advanced Extents in the Volume Actions panel.

Press the right mouse button and click Extent Table View (Advanced) from the shortcut

menu.
Press the F9 key.

Figure 4-32 shows an example of the advanced extent information displayed in the Extent
tab.
xStack Storage Management Center Software User's Guide
Figure 4-31. Extents Tab (Basic Information)
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