text: **Note:**The first generation of control enclosures (2076 - models 112, 124, 312, and 324) 
  were withdrawn from marketing. However, expansion enclosures 2076-212 and 2076-224 
  can still be ordered (see Table 2-1) because they attach to those control enclosures only. 
  Intermixing control enclosures with expansion enclosures of different generations is not a 
  supported combination, and is refused by IBM Spectrum Virtualize software. 
  
  The first generation of IBM Storwize V7000 hardware is not supported by IBM Spectrum 
  Virtualize V8.1. Any attempt to upgrade to V8.1 is rejected by the software. The last 
  supported version for first-generation Storwize V7000 is V7.8. 