text: **7.1.10 Deduplicated volumes**
  
  Deduplication is a specialized data compression technique for eliminating duplicate copies of 
  data. However, in contrast to the standard file-compression tools that work on single files or 
  sets of files, deduplication is a technique applied on a larger scale, such as a file system or 
  volume. In IBM Spectrum Virtualize deduplication can be enabled for thin provisioned and 
  compressed volumes created in data reduction pools. 
  
  Deduplication works by identifying repeating chunks in the data written to the storage system. 
  Spectrum Virtualize calculates a signature for each data chunk (by using a hash function), 
  and checks if that signature is already present in the deduplication database. 