text: To create a DRAID MDisk, specify the RAID level, number of drives, drive class, and target 
  storage pool. Drive class depends on drive technology type, connectivity, speed, and 
  capacity. The system automatically chooses drives for the array from the available drives in 
  the class. The number of rebuild areas is also set automatically, but you can adjust it. 
  Example 6-16 creates DRAID6 array out of seven drives of class 1 and adds it to Pool1. 
  
  Example 6-16 Creating DRAID with mkdistributedarray (some columns are not shown) 