D-Link DSN-1100, User Manual

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xStack Storage Management Center Software User’s Guide 67
Figure 4-5. Example of SMART Attributes Tab
4.3.3 Viewing Extents on a Drive (Extents Tab)
An extent is a contiguous set of logical blocks (LBs) on a drive. An extent is also called a
physical extent.
When a drive is selected in the Main Display, you can use the Extents tab to view
information about the extents on the selected drive. Initially, the Extents tab shows
basic extent information, as shown in Figure 4-6. This read-only screen provides volume
name links below the first Description column that, when clicked, display the selected
volume in the Extents tab of the Volume View (see section 3.4.2).
Figure 4-6. Example of Extents Tab (Basic Information)