Cec Backplane; P5-595 Cec (Top View); P5-590 Cec (Top View) - IBM p5 590 System Handbook

Major design efforts have contributed to the development of the p5-590 and
p5-595 to analyze single points of failure within the CEC and to either eliminate
them or to provide hardening capabilities to significantly reduce their probability
of failure.

2.4.1 CEC backplane

The CEC backplane is a double-sided passive backplane that serves as the
mounting unit for various system components. The top view of p5-595 CEC is
shown in Figure 2-8; the p5-590 CEC is shown in Figure 2-9. There are no
physical differences between the p5-590 backplane and the p5-595 backplane.
Front side
Figure 2-8 p5-595 CEC (top view)
Front side
Figure 2-9 p5-590 CEC (top view)
CEC mother board
Book 0
SP0
required
OSC 0
Book 1
OSC 1
Book 2
SP1
Book 3
CEC mother board
Book 0
SP0
required
OSC 0
Book 1
OSC 1
DCA filler book
Filler book
DCA filler book
SP1
DCA filler book
DCA filler book
Filler book
DCA filler book
DCA filler book
Chapter 2. Hardware architecture
Back side
DCA03
3 DCAs per node
DCA02
DCA01
DCA13
DCA12
2 Oscillator cards
DCA11
VPD board
DCA23
DCA22
2 Service Processor
DCA21
cards
DCA33
DCA32
VPD board
DCA31
Back side
DCA03
3 DCAs per node
DCA02
DCA01
DCA13
DCA12
2 Oscillator cards
DCA11
VPD board
2 Service Processor
cards
VPD board
33