とりあえずzfs raidz

yum install -y zfs-fuse

for i in sda sdb ; do
parted /dev/$i mklabel gpt
parted /dev/$i unit s
parted /dev/$i mkpart primary 2048s 100%
parted /dev/$i align-check opt 1
parted /dev/$i set 1 raid on
done

zpool create -m /tank tank raidz sda1 sdb1
zfs set compression=gzip tank
zfs set dedup=off tank
zpool list
zpool status
zfs list
zfs get dedup
zfs get compress
zfs get compressratio
zfs get all

chkconfig zfs-fuse on

tank 5.4T 31K 5.4T 1% /tank