CentOS快速搭建raid0

两块ST1000DM0032D1CH162磁盘组raid0

fdisk /dev/sdb
fdisk /dev/sdc
分一个区，分区类型为fd

yum -y install mdadm
mdadm -C /dev/md0 -ayes -l0 -n2 /dev/sd[b,c]1

cat /proc/mdstat

[root@db share]# cat /proc/mdstat
Personalities : [raid0]
md0 : active raid0 sdc1[1] sdb1[0]
1953258496 blocks super 1.2 512k chunks

unused devices:

mdadm -D /dev/md0

echo DEVICE /dev/sd{b,c}1 >> /etc/mdadm.conf
mdadm -Evs >> /etc/mdadm.conf

mkfs.ext4 /dev/md0

性能：

[root@db share]# dd if=/dev/zero of=test4g bs=1M count=4096
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 7.06414 s, 608 MB/s