Administrator Guide
5 From the Data Reduction Prole drop-down menu, select Deduplication with Compression.
View Amount of Space Saved by Data Reduction
The total amount of space saved by Data Reduction depends on the amount of data eligible for data reduction and the type of data being
processed. Certain types of data will be reduced more eectively than others. The amount of volume data eligible for data reduction is
determined by the size of the data frozen by snapshots, and the Data Reduction Input setting.
Data Savings Ratios
System Data Reduction Ratio and System Data Eciency Ratio show the data savings on the Storage Center using the available disk
space-saving features.
System Data Reduction Ratio – Compares the amount of space that would be used by pages that are eligible for compression and
deduplication to the amount of space actually used by those pages after Storage Center applies Data Reduction.
System Data Eciency Ratio – Indicates the eciency of compression, deduplication, RAID, and Thin Provisioning
View Amount of Space Saved for a Storage Type
Storage Center determines the total percentage of space saved for all volumes in a storage type by comparing the amount of space
processed by Data Reduction to the amount of space used after data reduction.
1 If the Storage Manager Client is connected to a Data Collector, select a Storage Center from the Storage view.
2 Click the Storage tab.
3 In the Storage tab navigation pane, expand Storage Types.
4 Select a Storage Type. The space saved by Data Reduction is displayed at the bottom of the Summary tab.
5 Select a storage type.
The space saved by data reduction is displayed in the Data Reduction Savings section.
View Amount of Space Saved by Data Reduction on a Volume
The percentage of space saved by data reduction for a volume is an estimate found by comparing the total amount of space saved by
compression and deduplication with the total amount of space processed by data reduction in the volume.
1 If the Storage Manager Client is connected to a Data Collector, select a Storage Center from the Storage view.
2 Click the Storage tab.
3 In the Storage tab navigation pane, select a volume.
4 In the right pane, click the Statistics tab. The space saved by data reduction on that volume is displayed at the bottom of the
Statistics tab.
Change the Default Data Reduction Prole
The default Data Reduction prole determines what type of data reduction is applied to new volumes created by a Storage Manager user.
Allow Data Reduction Selection displays the data reduction options when creating volumes.
1 If the Storage Manager Client is connected to a Data Collector, select a Storage Center from the Storage view.
2 In the Summary tab, click Edit Settings. The Edit Storage Center Settings dialog box opens.
3 Click the Preferences tab.
4 From the Data Reduction Prole drop-down list, select the Default Data Reduction prole.
Storage Center Administration
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