= Ein Beispielausgabe für `cat /proc/mdstat` =
{{{
Personalities : [raid1] [raid5]
read_ahead 1024 sectors
md2 : active raid5 hdc3[0] hde3[1] hdg3[2]
      112639744 blocks level 5, 64k chunk, algorithm 0 [3/3] [UUU]

md1 : active raid1 hdc2[0] hde2[1] hdg2[2]
      512000 blocks [2/2] [UU]

md0 : active raid1 hdc1[0] hde1[1] hdg1[2]
      511936 blocks [3/3] [UUU]

unused devices: <none>
}}}

md2: RAID5 mit 3 Platten, alle aktiv

md1: RAID1 mit 3 Platten, 1 Spare

md0: RAID1 mit 3 Platten, kein Spare, d.h. zweifach gespiegelt



= Beispielverlauf für `cat /proc/mdstat` beim Recovery  =
mit `raidtools`

{{{
Personalities : [raid1] 
read_ahead 1024 sectors
md3 : active raid1 sdb1[1] sda1[0]
      104320 blocks [2/2] [UU]
      
md2 : active raid1 sdb2[1] sda2[0]
      1020032 blocks [2/2] [UU]
      
md1 : active raid1 sdb3[1] sda3[0]
      3068288 blocks [2/2] [UU]
      
md4 : active raid1 sdb4[1] sda4[0]
      4096448 blocks [2/2] [UU] 

unused devices: <none>
}}}

`md1 .. md4`: RAID1 mit 2 Platten, kein Spare, d.h. einfach gespiegelt

action: Platte `/dev/sdb` entfernen (Ausfall simulieren) 
{{{
Personalities : [raid1] 
read_ahead 1024 sectors
md3 : active raid1 sdb1[1](F) sda1[0]
      104320 blocks [2/2] [U_]
      
md2 : active raid1 sdb2[1](F) sda2[0]
      1020032 blocks [2/2] [U_]
      
md1 : active raid1 sdb3[1](F) sda3[0]
      3068288 blocks [2/1] [U_]
      
md4 : active raid1 sdb4[1](F) sda4[0]
      4096448 blocks [2/1] [U_]
      
unused devices: <none>
}}}
beschädigte Partitionen sind mit `(F)` gekennzeichnet

action: recovery mit

`# raidhotremove /dev/md1 /dev/sdb3`

`# raidhotadd /dev/md1 /dev/sdb3`

anstoßen
{{{
Personalities : [raid1] 
read_ahead 1024 sectors
md3 : active raid1 sdb1[1](F) sda1[0]
      104320 blocks [2/1] [U_]
      
md2 : active raid1 sdb2[1](F) sda2[0]
      1020032 blocks [2/2] [U_]
      
md1 : active raid1 sdb3[2] sda3[0]
      3068288 blocks [2/1] [U_]
      [=>...................]  recovery =  8.1% (251596/3068288) finish=6.7min speed=6963K/sec
md4 : active raid1 sdb4[1](F) sda4[0]
      4096448 blocks [2/1] [U_]
      
unused devices: <none>
}}}

nach dem recovery der ersten Partition:
{{{
Personalities : [raid1] 
read_ahead 1024 sectors
md3 : active raid1 sdb1[1](F) sda1[0]
      104320 blocks [2/1] [U_]
      
md2 : active raid1 sdb2[1](F) sda2[0]
      1020032 blocks [2/2] [U_]
      
md1 : active raid1 sdb3[1] sda3[0]
      3068288 blocks [2/2] [UU]
      
md4 : active raid1 sdb4[1](F) sda4[0]
      4096448 blocks [2/1] [U_]
      
unused devices: <none
}}}
usw.

mit allen Partitionen wiederholen...


nach dem kompletten Recovery
{{{
Personalities : [raid1] 
read_ahead 1024 sectors
md3 : active raid1 sdb1[1] sda1[0]
      104320 blocks [2/2] [UU]
      
md2 : active raid1 sdb2[1] sda2[0]
      1020032 blocks [2/2] [UU]
      
md1 : active raid1 sdb3[1] sda3[0]
      3068288 blocks [2/2] [UU]
      
md4 : active raid1 sdb4[1] sda4[0]
      4096448 blocks [2/2] [UU]
      
unused devices: <none>
}}}