text: **Set spare goal or Set Rebuild Areas Goal**
  Select this option to set the number of spare drives (on TRAID) or rebuild areas (on DRAID) 
  that are required to protect the array from drive failures. 
  
  If the number of rebuild areas available does not meet the configured goal, an error is logged 
  in the event log as shown in Figure 6-44. This error can be fixed by replacing failed drives in 
  the DRAID array. 