C H A P T E R 2

What You Must Know Before Using

DR

This chapter provides information you must know to successfully use the DR functions.

2.1System Configuration

This section describes the conditions, premises, and actions for operating the DR functions to construct a system.

2.1.1System Board Components

There are three types of system board components that can be added and deleted by DR: CPU, memory, and I/O device. FIGURE 2-1and FIGURE 2-2show examples of a system board of a midrange server that is divided into one Uni-XSB, and into Quad- XSBs. FIGURE 2-3and FIGURE 2-4show examples of a system board of a high-end server that is divided into one Uni-XSB, and into Quad-XSBs.

Note – Due to diagnostic requirements, the DR function works only on boards that have at least one CPU and memory.

2-1