Service manual

1-86 AlphaServer GS80/160/320 Service Manual
1.21.4 Standard I/O Module
The standard I/O module is central to the system management
architecture. It provides basic I/O devices necessary for testing and
configuring the system and is the location of the system control
manager (SCM) and the system console (SRM). It is located in the
master PCI box in the power cabinet. At least one is required though
there may be up to eight to support partitions. When the SCM is in
pass through mode, it becomes the local console.
Figure 1– 39 Standard I/O Module