text: Figure 10-18 Compresstimator submenu 
  
  This action shows you the results of the latest estimation cycle and the date when it was 
  completed. If no analysis was done yet, the system suggests running it. 
  
  To run or rerun on a single volume, select**Analyze**in**Space Savings**submenu. 
  
  If you are using a version of IBM Spectrum Virtualize that is older than V7.6 or if you want to 
  estimate the compression savings of another IBM or non-IBM storage system, the separate 
  IBM Comprestimator Utility can be installed on a host that is connected to the device that 
  needs to be analyzed. More information and the latest version of this utility, see this IBM 
  Support web page. 
  
  Consider the following recommended best practices for using Comprestimator: 
  
  (cid:2) Run the Comprestimator utility before implementing an IBM Spectrum Virtualize solution 
  and DRPs. 
  
  (cid:2) Download the latest version of the Comprestimator utility if you are not using one that is 
  included in your IBM Spectrum Virtualize solution. 
  
  (cid:2) Use Comprestimator to analyze volumes that contain as much active data as possible 
  rather than volumes that are nearly empty or newly created. This use ensures more 
  accuracy when sizing your environment for compression and DRPs. 