1U server is a high-availability and high-density low-cost server platform, which is specially designed for special application industries and high-density computer environments. They can start their own operating systems through local hard disks, such as Windows/NT/2000/2003, Linux, Solaris, etc., similar to independent servers. In this mode, each motherboard runs its own system, serving different designated user groups, and is not related to each other. However, we can still use system software to assemble these motherboards into a server cluster.