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Setting up RAID-1 in a production environment
# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid5]
read_ahead 1024 sectors
md0 : active raid1 ide/host2/bus0/target0/lun0/part1[2] ide/host0/bus0/target0/lun0/part5[0]
4610496 blocks [2/1] [U_]
[>....................] recovery = 1.8% (84480/4610496) finish=3.5min speed=21120K/sec
unused devices: <none>
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