text: An IBM Storwize V7000 solution provides a choice of up to 760 disk drives per system or 
  1024 disk drives per clustered system (by using dense drawers). The solution uses SAS 
  cables and connectors to attach to the optional expansion enclosures. 
  
  The IBM Storwize V7000 system supports a range of external disk systems similar to what 
  IBM SAN Volume Controller supports today. A view of an IBM Storwize V7000 control 
  enclosure is shown in Figure 2-4. 