duplicate copy

基本解释

This way, new hardware is introduced into the environment only as a duplicate copy of the other machines.
這樣，可以將新硬件僅作爲其他計算機的副本引入環境。
Using the slice syntax, without specifying a starting or ending index, you can make a duplicate copy of an existing tuple.
使用片段語法，無需指定開始或結束索引，就可以制作現有 tuple 的副本。
so you can have a duplicate copy of the same filesystem. When you run xm create -c test, it runs the same server as the BaseServer, but it's called TestServer.
儅運行 xm create -c test 時，它會運行與 BaseServer 相同的服務器，但是它的名稱是 TestServer。