IBM PowerHA SystemMirror for i: Using Geographic Mirroring (Volume 4 of 4)

Introduction to geographic mirroring

This chapter provides an introduction to IBM PowerHA SystemMirror for i with geographic mirroring.

The following topics are described in this chapter:

•1.1, “Value proposition” on page 2

•1.2, “Concept of geographic mirroring” on page 2

•1.3, “Prerequisites and editions” on page 4

•1.4, “Modes of operation” on page 4

1.1 Value proposition

Today, businesses experience increasing demands for application availability, which requires that both small and large clients look for a solution that can help eliminate planned ...