Administrator Guide

3. On the Volumes view, select the volume you want to modify.
4. Click (Edit).
The Edit Volume dialog box opens.
5. Expand Data Reduction.
6. From the Data Reduction Profile drop-down list, select Compression.
7. Click OK.
Related tasks
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. If you are connected to a Data Collector, select a Storage Center from the drop-down list in the left navigation pane of Unisphere
Central.
2.
From the
STORAGE menu, click Volumes.
The Volumes view is displayed.
3. In the Volumes view, select the volume you want to modify.
4. Click (Edit).
The Edit Volume dialog box opens.
5. Expand Data Reduction.
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 – Ratio that 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 Efficiency Ratio – Ratio that indicates the efficiency of compression, deduplication, RAID, and Thin Provisioning
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Storage Center Administration