Central processor complex  hardware components 2 This chapter introduces the z14 central processor complex (CPC) hardware components. It  also describes the significant features and functions with their characteristics and options.  Note:  Throughout this chapter, “z14” refers to  IBM z14 Model M0x (Machine Type 3906)  unless otherwise specified. The objective of this chapter is to explain the z14 hardware building blocks and how these  components interconnect from a physical point of view. This information is useful for planning  purposes and can help in defining configurations that fit your requirements. This chapter includes the following topics: GLYPH<SM590000> 2.1, “Frames and drawers” on page 36 GLYPH<SM590000> 2.2, “CPC drawer” on page 40 GLYPH<SM590000> 2.3, “Single chip modules” on page 47 GLYPH<SM590000> 2.4, “Memory” on page 54 GLYPH<SM590000> 2.5, “Reliability, av ailability, and serviceability” on page 65 GLYPH<SM590000> 2.6, “Connectivity” on page 67 GLYPH<SM590000> 2.7, “Model configurations” on page 70 GLYPH<SM590000> 2.9, “Summary” on page 85 GLYPH<SM590000> 2.8, “Power and cooling” on page 77 35 ' Copyright IBM Corp. 2 017. All rights reserved.