说明：  Openfiler安装aoe，dhcp，tftp支持xp利用gpxe从san启动。 Openfiler本身不支持aoe，dhcp和tftp，这些需要安装和编译。
(Openfiler install aoe, dhcp, tftp support xp use gpxe start from the san. Openfiler does not support itself, aoe, dhcp and tftp, these need to install and compile.)