root@nasuntu:~# cat /proc/mdstat 
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] 
md0 : active raid5 sda1[0] sdc1[3]
      3907005440 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/2] [U_U]
      
unused devices: <none>