text: It is possible to demonstrate the potential benefit of IBM Easy Tier in the environment before 
  installing different drives. When IBM Easy Tier is turned on, the algorithm produces the 
  statistic file that can be offloaded from IBM Storwize V7000. 
  
  The IBM Storage Tier Advisor Tool (STAT) can be used to create a summary report that uses 
  the statistic file offloaded from IBM Storwize V7000. 
  
  The STAT tool is available at this website. 
  
  **2.5.18 Encryption**
  
  IBM Storwize V7000 provides optional encryption of data at rest, which protects against the 
  potential exposure of sensitive user data and user metadata that is stored on discarded, lost, 
  or stolen storage devices. Encryption of system data and system metadata is not required, so 
  system data and metadata are not encrypted. 
  
  Planning for encryption involves purchasing a licensed function and then activating and 
  enabling the function on the system. A license is required to encrypt data that is stored on 
  drives. When encryption is activated and enabled on the system, valid encryption keys must 
  be present on the system when the system unlocks the drives or the user generates a key. 
  
  IBM Spectrum Virtualize V7.4, hardware encryption was introduced, with software encryption 
  introduced in V7.6. Encryption keys can be managed by IBM SKLM or stored on USB flash 
  drives that are attached to a minimum of one of the nodes. Since V8.1, a combination of 
  SKLM and USB key repositories can be used. 