<a href="http://www.linuxfly.org/post/78.htm">http://www.linuxfly.org/post/78.htm</a>
<a href="http://www.linuxmanpages.com/man8/mdadm.8.php">http://www.linuxmanpages.com/man8/mdadm.8.php</a>
<a href="http://www.xxlinux.com/linux/article/network/security/20071108/11703.html">http://www.xxlinux.com/linux/article/network/security/20071108/11703.html</a>