root@server:/home/csaba# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md1 : active raid1 sda2[0]
     116414912 blocks [2/1] [U_]

md0 : active raid1 sda1[2](f) sdb1[1]
     803136 blocks [2/1] [_U]

unused devices: <none>