Compaq GS80, GS160, GS320 manual Directory Module

2.3.4Directory Module

In a GS160/320 system, one directory module is required for each QBB in a system box. In a two-drawer GS80 system, a directory module is required in each system drawer. No directory module is needed in a one-drawer system. The directory module functions as a memory coherency manager.

Figure 2–8 Directory Module

Directory

DIMMs

PK0606

2-12 AlphaServer GS80/160/320 User’s Guide