1.3 Overview of the SnapMirror technology Data ONTAP SnapMirror technology provides an efficient way to transfer data from one IBM N Series storage system to another, as in Figure 1-3. The storage system from which data is transferred is called the SnapMirror source , and the storage system to which data is transferred is called the SnapMirror destination . A SnapMirror source and its corresponding destination can reside on the same storage system or on two separate storage systems that are miles apart, provided that both storage systems are able to communicate with each other over a network. Data changes made at the SnapMirror source are replicated continuously at the SnapMirror destination to keep the data at both locations synchronized. . .