Dell VNX8000 VNX2 Deduplication and Compression - Maximizing effective capacit - Page 49

The File System Properties Deduplication Settings Window, Viewing Deduplication

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Figure 43. The File System Properties Deduplication Settings Window Viewing Deduplication Statistics The user is able to view the results of the deduplication process on the file system data by using the file system's properties page. The deduplication savings is the total amount of space saved for deduplication and compression if both are enabled on the file system. If File Deduplication is disabled, the savings are reported for compression only. The following statistics are reported:  Timestamp of the last successful scan of the file system.  Files scanned - Total number of files that the deduplication policy engine looked at when it last scanned the file system.  Files deduped - Number of files that the deduplication policy engine processed to save space. It also shows the percentage of deduplicated files versus scanned files.  Original data size - Space required to store the data in the file system if it is not deduplicated. This number might exceed the capacity of the file system, in which case the file system is said to be overprovisioned. This is shown by the ratio of the original data size to the file system capacity, which is also displayed. EMC VNX2 Deduplication and Compression 49

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EMC VNX2 Deduplication and Compression
Figure 43. The File System Properties Deduplication Settings Window
Viewing Deduplication Statistics
The user is able to view the results of the deduplication process on the file system
data by using the file system’s properties page. The deduplication savings is the total
amount of space saved for deduplication and compression if both are enabled on the
file system. If File Deduplication is disabled, the savings are reported for compression
only. The following statistics are reported:
Timestamp
of the last successful scan of the file system.
Files scanned
— Total number of files that the deduplication policy engine
looked at when it last scanned the file system.
Files deduped
— Number of files that the deduplication policy engine
processed to save space. It also shows the percentage of deduplicated files
versus scanned files.
Original data size
— Space required to store the data in the file system if it is
not deduplicated. This number might exceed the capacity of the file system, in
which case the file system is said to be overprovisioned. This is shown by the
ratio of the original data size to the file system capacity, which is also
displayed.