应用程序仍旧在一台服务器上运行。
与在一台服务器上执行拨号音恢复相比，此过程比较复杂。
This process is more complex than performing a dial tone recovery on a single server.
在一台服务器上，存在有多个系统实例，同时启动了多个操作系统。
On one server, there are many system instances, and many operating systems are started at the same time.
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