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Chapter 22. Global Mirror overview
In this chapter we provide an overview of what Global Mirror is. We also discuss the need for
data consistency at a distant site when synchronous data replication such as Metro Mirror is
not possible. This chapter then explains how Global Mirror works in a similar manner to a
distributed application—in a server and client relationship. Finally, in this chapter you will find
a step-by-step process to establish a Global Mirror environment.
The information discussed in the present chapter can be complemented with the following
IBM publications and redbooks:
z/OS DFSMS Advanced Copy Services, SC35-0428
IBM System Storage DS6000 Series: Architecture and Implementation, SG24-6781
IBM System Storage DS6000: Command-Line Interface User´s Guide, GC26-7922
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