Owner's manual

Each of the two PDU power cables has an AC power source specific connector. The circuit
breaker-controlled PDU outputs are routed to a group of four AC receptacles (see Figure 31). The
voltages are then routed to PDMs, sometimes referred to as AC power strips, m ounted on the two vertical
rails in the rear of the rack.
1
0130a
2
3
5
4
5
Figure 31 D
ual PDU assembly
1. PDU 1
2. PDU 2
3. Circuit
breakers
4. AC recep
tacles
5. Mounting hardware
PDU 1
PDU 1 conn
ects to AC power distribution source 1 . A PDU 1 failure:
• Disables the power distribution circuit.
• Removes power from PDMs 1, 2, and 3.
• Disable
sPS1inthedriveenclosures.
• Disables the upper controller power supply.
PDU 2
PDU 2 connects to AC power distribution source 2. A PDU 2 failure:
• Disables the power distribution circuit.
• Removes power from PDMs 4, 5, and 6.
• Disables PS 2 in the drive enclosures.
• Disables the lower controller power supply.
PDMs
There are six PDMs mounted in the rear of ea ch rack:
• Three mo unted on the left vertical rail connect to PDU 1 .
• Three
mounted on the right vertical rail connected to PDU 2.
Each PDM has eight AC receptacles and one thermal circuit breaker. The PDMs d istribute the AC power
from the PDUs to the enclosures. Two power sources exist for each controller pair and drive enclosure. If
a PDU fails, the system will remain operational.
4000/6000/8000 Enterprise Virtual Array user guide
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