With a SAN,there is no need for a physically separate network because the SAN can function as a virtual subnet operating on a shared network infrastructure,provided that different priorities or classes of service are established.

• 有了存储区域网，就不需要物理上分开的网络，因为只要建立了不同的优先等级和服务种类，存储区域网就起了在一个共享的网络基础设施上运作的虚拟子网的作用。