When the VNA is shutdown unexpectedly or power is removed without first shutting down, large amounts of Hard Disk Drive space is rendered unusable. If shutdown in this manner enough times, the VNA could become unstable and no longer work.
This Hard Disk Drive space can be recovered by first running Windows Error-checking to find and correct errors on the disk, and then the Disk Defragmenter to recover Hard Disk Drive space. These programs should be run routinely, about every 1 to 4 weeks, depending on how often the VNA is unexpectedly shutdown.
To learn more about Disk Defragmenter, see the Windows Help file.
Follow this procedure to run these programs:
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Windows 7 |
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On the desktop, click Start -> Computer |
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In the upper pane, click System properties |
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In the left pane, click Performance Information and Tools. |
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In the left pane, click Advanced Tools. |
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Click Open Disk Defragmenter. |
Click Analyze disk.
Once Windows is finished analyzing the disk, you can check the percentage of fragmentation on the disk in the Last Run column. If the number is above 10%, you should defragment the disk.
Click Defragment Disk.
Disk Defragmenter might take from several minutes to a few hours to finish, depending on the size and degree of fragmentation of your hard disk.