text: **10.6 Saving estimation for compression and deduplication**
  
  This section provides information about the tools that are used for sizing the environment for 
  compression and deduplication. 
  
  **10.6.1 Evaluate compression savings by using IBM Comprestimator**
  
  IBM Comprestimator is an integrated GUI and CLI host-based utility that estimates the space 
  savings that are achieved when compressed volumes are used for block devices. This utility 
  provides a quick and easy view of showing the benefits of the use of compression. The utility 
  performs read-only operations and therefore, does not affect the data that is being stored on 
  device. 
  
  If the compression savings prove to be beneficial in your environment, volume mirroring can 
  be used to convert volumes to compressed volumes in the data reduction pools. 