System Setup and Configuration
3.6 System Expansion
3.6.3 Control Power Bus for Expanders
The three power bus connectors on the H7874 power supply allow you to
configure a power bus for systems expanded with R400X and B400X expanders.
The power bus allows you to turn power on and off for one or more expanders
through the power supply designated as the main power supply (Figure 3–3).
Note
DSSI VAXcluster systems should not be configured with a power bus.
Inadvertently bringing down the cluster defeats the added reliability of
a DSSI VAXcluster.
Figure 3–3 Sample Power Bus Configuration
System
Expander 1
Expander 2
MLO-004041
3–12 System Setup and Configuration
