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## Advanced features for storage efficiency 

IBM Spectrum Virtualize running inside the IBM SAN Volume Controller offers several functions for storage optimization and efficiency. 

This chapter introduces the basic concepts of those functions. It also provides a short technical overview and implementation recommendations. 

For more information about planning and configuration of storage efficiency features, see the following publications: 

GLYPH<SM590000> IBM System Storage SAN Volume Controller and Storwize V7000 Best Practices and Performance Guidelines , SG24-7521 

GLYPH<SM590000> Introduction and Implementation of Data Reduction Pools and Deduplication , SG24-8430 

GLYPH<SM590000> IBM Real-time Compression in IBM SAN Volume Controller and IBM Storwize V7000 , REDP-4859 

GLYPH<SM590000> Implementing IBM Real-time Compression in SAN Volume Controller and IBM Storwize V7000 , TIPS1083 

GLYPH<SM590000> Implementing IBM Easy Tier with IBM Real-time Compression , TIPS1072 

This chapter includes the following topics: 

GLYPH<SM590000> Easy Tier 

GLYPH<SM590000> Thin-provisioned volumes 

GLYPH<SM590000> Unmap 

GLYPH<SM590000> DRPs 

GLYPH<SM590000> Compression with standard pools 

GLYPH<SM590000> Saving estimation for compression and deduplication 

GLYPH<SM590000> Data deduplication and compression on external storage 

