text: **Chapter 10. Advanced features for storage**
  
  **efficiency**
  
  IBM Spectrum Virtualize running inside the IBM Storwize V7000 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: 
  
  (cid:2) IBM System Storage SAN Volume Controller and Storwize V7000 Best Practices and 
  Performance Guidelines, SG24-7521 
  
  (cid:2) Introduction and Implementation of Data Reduction Pools and Deduplication, SG24-8430 
  
  (cid:2) IBM Real-time Compression in IBM SAN Volume Controller and IBM Storwize V7000, 
  REDP-4859 
  
  (cid:2) Implementing IBM Real-time Compression in SAN Volume Controller and IBM Storwize 
  V7000, TIPS1083 
  
  (cid:2) Implementing IBM Easy Tier with IBM Real-time Compression, TIPS1072 
  
  This chapter includes the following topics: 
  
  (cid:2) 10.1, “Easy Tier” on page 404 
  (cid:2) 10.2, “Thin provisioned volumes” on page 415 
  (cid:2) 10.3, “Unmap” on page 417 
  (cid:2) 10.4, “Data Reduction Pools” on page 420 
  (cid:2) 10.5, “Compression with standard pools” on page 427 
  (cid:2) 10.6, “Saving estimation for compression and deduplication” on page 429 
  (cid:2) 10.7, “Data deduplication and compression on external storage” on page 431 