ubuntu server add Harddisk

1. check device name in /dev/, ex: /dev/sdb
2. use fdisk create patition, ex: fdisk /dev/sdb
p: printe all patition
n: create a patition
d: delete a patition
l: show all know kind of patition
w: save setting

3. format patition, ex: mke2fs /dev/sdb1
4. configure setting in /etc/fstab