Yes. everything is working fine except there is a "mdadm: No devices list in the conf file were found" error .
Google it then found the solution:
# nano /etc/default/grub
add rootdelay to this line, GRUB_CMDLINE_LINUX_DEFAULT="quiet splash rootdelay=10".
Those disks connect to LSI HBA card need some delay to get ready.
Because Linux support booting from raid. the mdadm scan the devices and try to build the raid but they are not ready yet.