硬盘
It not only initializes the hard disks but also the network as you need a network to mount nfs file systems. 当安装一个nfs文件系统时不但要初始化硬盘还需初始化网络。
It controls how data and database are shared among users on the network and how users access master copies of data and application software on the centralized hard disk. 它控制着网上用户如何共享数据和数据库，以及用户如何存取中央硬盘上的数据和应用软件的主拷备。
