Administrator Guide

6. From the Data Reduction Profile drop-down list, select Compression.
7. Click OK.
Related links
Creating Volumes
Modifying Volumes
Deduplication
Deduplication reduces the space used by a volume by identifying and deleting duplicate pages. Deduplication requires SSD drives.
Apply Deduplication With Compression to a Volume
Apply Deduplication with Compression to reduce the size of the volume. Deduplication and compression run during daily Data
Progression.
Prerequisites
Allow Data Reduction Selection must be enabled in the Preferences tab of the Edit Storage Center Settings dialog box.
About this task
NOTE: The amount of space saved by Data Reduction is determined by the amount of data eligible for Data Reduction
on the volume compared to the total amount of space used by that data on disk after Data Reduction.
Steps
1. Expand the Dell Storage Manager menu, and then click Storage.
2. In the SC Series tab, select a Storage Center to open the Storage Center view.
3. Click the Storage tab.
4. In the Storage tab navigation pane, select a volume.
5. Click Edit. The Edit Volume dialog box opens.
6. From the Data Reduction Profile 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 effectively 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 Efficiency 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 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 Efficiency Ratio
Indicates the efficiency 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. Expand the Dell Storage Manager menu, and then click Storage.
2. In the SC Series tab, select a Storage Center to open the Storage Center view.
3. Click the Storage tab.
4. Click the Storage Types subtab. The space saved by Data Reduction is displayed at the bottom of the Storage Types subtab.
48
Storage Center Administration