1.3.3 Dual Cabinet Power Configuration
In the dual cabinet power configuration, shown in Figure 1–6, an auxiliary power
source and a second CDU (B) are used to supply ac power to a second ac power
supply (B) in each shelf. If the primary power source, CDU A, or ac power supply
A fails, the shelf remains powered by ac power supply B. This configuration
provides complete power redundancy to the shelf’s peripheral devices.
Figure 1–6 Dual Cabinet Power Configuration
AC POWER
SUPPLY B
AC POWER
SUPPLY A
CXO-3936A-MC
AUXILLARY
AC POWER
SOURCE
PRIMARY
AC POWER
AUXILLARY
AC POWER
(BLACK
CABLE)
(GRAY
CABLE)
SBB SHELF
PRIMARY
AC POWER
SOURCE
CDU A
CDU B
Introduction 1–9
