7. In the next window, the IBM Storwize V5000 Gen2 GUI provides help and guidance about  additional licenses that are required for certain system functions. A license must be  purchased for each enclosure that is attached to, or externally managed by, the IBM  Storwize V5000 Gen2. For each of the functions, enter the number of enclosures, as  shown in Figure 2-28. Then, click  Apply and Next . – FlashCopy: Enter the number of enclosur es that are licensed to use FlashCopy  function. – Remote copy: Enter the number of Remote Mirroring licenses. This license setting  enables the use of Metro Mirror and Global Mirror functions. This value must be equal  to the number of enclosures that are licensed for external virtualization, plus the  number of attached internal enclosures. – Easy Tier: Enter the number of enclosures that are licensed to use Easy Tier function. – External Virtualization: Enter the number of external enclosures that you are  virtualizing. An external virtualization license is required for each physical enclosure  that is attached to your system. – Real-time Compression (RtC): Enter the number of enclosures that are licensed to use  RtC. The following actions are required for each of the licensed functions: Figure 2-28 Setup wizard: Licensed Functions 66  Implementing the IBM Storwize V5000 Gen2 with IBM Spectrum Virtualize V8.2.1