text: Figure 6-38 Assign Storage to Pool dialog 
  
  If you select two drives only, the system automatically creates a RAID-10 array, with no spare 
  drive. For more control of the array creation steps, you can select the**Internal Custom**
  option. 
  
  By default, if sufficient candidate drives are present, the system recommends traditional 
  arrays for most new configurations of MDisks. However, switch to Distributed RAID when 
  possible, with the**Internal Custom**option. 
  
  If the system has multiple drive classes (like Flash and Enterprise disks, for example), the 
  default option is as follows: 
  
  1. Create multiple arrays of different tiers. 
  2. Assign them to the pool to take advantage of the Easy Tier functionality. 