zEnterprise System hardware overview
The zEnterprise System is the next step in the evolution of the mainframe family. It continues this evolution by introducing several innovations and expanding existing functions, building upon the z/Architecture.
This chapter expands upon the overview of key hardware elements of the zEnterprise CPCs and zBX provided in Chapter 1, “Proposing an IT infrastructure (r)evolution” on page 1, and compares them with the System z10 servers, where relevant.
This chapter discusses the following topics:

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