mdstat of die raid 5 of 5 disk (1Tb)

root@ubuntos:~# cat /proc/mdstat
Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10]
md121 : active raid1 sde1[0]
      530048 blocks [5/1] [U____]
      bitmap: 2/65 pages [8KB], 4KB chunk

md122 : active raid1 sde4[0]
      458880 blocks [5/1] [U____]
      bitmap: 14/57 pages [56KB], 4KB chunk

md123 : active (auto-read-only) raid1 sde2[1]
      530048 blocks [2/1] [_U]

md124 : inactive sdd4[8](S) sdc4[7](S) sdb4[6](S) sda4[5](S)
      1991680 blocks

md125 : active raid1 sda1[2] sdd1[1] sdb1[3] sdc1[0]
      530048 blocks [5/4] [UUUU_]
      bitmap: 39/65 pages [156KB], 4KB chunk

md126 : inactive sda3[4](S) sde3[0](S) sdd3[1](S) sdb3[3](S) sdc3[2](S)
      4875968000 blocks

md127 : active raid1 sda2[1] sdd2[0] sdb2[2](S) sdc2[3](S)
      530048 blocks [2/2] [UU]

unused devices: <none>