RAID5 $B$KD)@o(B

RAID5 $B$b;n$7$F$_$k(B

/etc/raidtab

bash-2.04$ cat /etc/raidtab
raiddev /dev/md0
 raid-level 5
 nr-raid-disks 4
 nr-spare-disks 0
 chunk-size 4
 persistent-superblock 1
 device /dev/sda1
 raid-disk 0
 device /dev/sdc1
 raid-disk 1
 device /dev/sdb1
 raid-disk 2
 device /dev/sdd1
 raid-disk 3
bash-2.04$

RAID $B$N:n@.(B

[root@hackkit /etc]# mkraid -R /dev/md0
DESTROYING the contents of /dev/md0 in 5 seconds, Ctrl-C if unsure!
handling MD device /dev/md0
analyzing super-block
disk 0: /dev/sda1, 292969341kB, raid superblock at 292969216kB
disk 1: /dev/sdc1, 292969341kB, raid superblock at 292969216kB
disk 2: /dev/sdb1, 292969341kB, raid superblock at 292969216kB
disk 3: /dev/sdd1, 292969341kB, raid superblock at 292969216kB
[root@hackkit /etc]#

mdstat $B$r$_$F$_$k(B

[root@hackkit /etc]# cat /proc/mdstat
Personalities : [raid5]
read_ahead 1024 sectors
md0 : active raid5 sdd1[3] sdb1[2] sdc1[1] sda1[0]
 878907648 blocks level 5, 4k chunk, algorithm 0 [4/4] [UUUU]
 [>....................] resync = 0.0% (15376/292969216) finish=9511.4min speed=512K/sec
unused devices: 
[root@hackkit /etc]#

$B$H$3$m$,$$$D$^$G7P$C$F$b(BHDD$B$r%"%/%;%9$9$kMM;R$,$J$$!#(B

bash-2.04$ cat /proc/mdstat
Personalities : [raid5]
read_ahead 1024 sectors
md0 : active raid5 sdd1[3] sdb1[2] sdc1[1] sda1[0]
 878907648 blocks level 5, 4k chunk, algorithm 0 [4/4] [UUUU]
 [>....................] resync = 0.0% (8556/292969216) finish=194171.5min speed=25K/sec
unused devices: 
bash-2.04$

$B$^$?!"%d%a$+$!(B?

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$B"+(B
RAID1 $B8N>c(B $B%O%C%/$N5-O?(B
LinkStation/$B8 $B$r%O%C%/$7$h$&(B $B"*(B
$BJ#?t(BUSB$B%I%i%$%VIT2D(B

RAID5 $B$KD)@o(B

/etc/raidtab

RAID $B$N:n@.(B

RAID5 $B$KD)@o(B

RAID $B$N:n@.(B