HP 6400/8400 HP StorageWorks 6400/8400 Enterprise Virtual Array User Guide - Page 21

PDUs, The standard 60-Hz PDU cable has a NEMA L6-30P, 3-wire, 30-A, 60-Hz connector.

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NOTE: Drive enclosures, when purchased separately, include one 50 cm black cable and one 50 cm gray cable. The configuration provides complete power redundancy and eliminates all single points of failure for both the AC and DC power distribution. CAUTION: Operating the array with a single PDU will result in the following conditions: • No redundancy • Louder controllers and disk enclosures due to increased fan speed • HP P6000 Command View will continuously display a warning condition, making issue monitoring a labor-intensive task Although the array is capable of doing so, HP strongly recommends that an array operating with a single PDU should not: • Be put into production • Remain in this state for more than 24 hours PDUs Each Enterprise Virtual Array rack has either a 50- or 60-Hz, dual PDU mounted at the bottom rear of the rack. The PDU placement is back-to-back, plugs facing toward the front (Figure 16 (page 21)), with circuit breaker switches facing the back (Figure 17 (page 22)). • The standard 50-Hz PDU cable has an IEC 309, 3-wire, 30-A, 50-Hz connector. • The standard 60-Hz PDU cable has a NEMA L6-30P, 3-wire, 30-A, 60-Hz connector. If these connectors are not compatible with the site power distribution, you must replace the PDU power cord cable connector. One option is the NEMA L5-30R receptacle, 3-wire, 30-A, 60-Hz connector. 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. The voltages are then routed to PDMs, sometimes called AC power strips, mounted on the two vertical rails in the rear of the rack. Figure 16 Dual PDU-front view 1. PDU B 2. PDU A 3. AC receptacles 2. Power receptacle schematic 4. Power cord Power distribution-Modular PDUs 21

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NOTE:
Drive enclosures, when purchased separately, include one 50 cm black cable and one
50 cm gray cable.
The configuration provides complete power redundancy and eliminates all single points of failure
for both the AC and DC power distribution.
CAUTION:
Operating the array with a single PDU will result in the following conditions:
•
No redundancy
•
Louder controllers and disk enclosures due to increased fan speed
•
HP P6000 Command View will continuously display a warning condition, making issue
monitoring a labor-intensive task
Although the array is capable of doing so, HP strongly recommends that an array operating with
a single PDU should not:
•
Be put into production
•
Remain in this state for more than 24 hours
PDUs
Each Enterprise Virtual Array rack has either a 50- or 60-Hz, dual PDU mounted at the bottom rear
of the rack. The PDU placement is back-to-back, plugs facing toward the front (
Figure 16 (page
21)
), with circuit breaker switches facing the back (
Figure 17 (page 22)
).
•
The standard 50-Hz PDU cable has an IEC 309, 3-wire, 30-A, 50-Hz connector.
•
The standard 60-Hz PDU cable has a NEMA L6-30P, 3-wire, 30-A, 60-Hz connector.
If these connectors are not compatible with the site power distribution, you must replace the PDU
power cord cable connector. One option is the NEMA L5-30R receptacle, 3-wire, 30-A, 60-Hz
connector.
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. The voltages are
then routed to PDMs, sometimes called AC power strips, mounted on the two vertical rails in the
rear of the rack.
Figure 16 Dual PDU—front view
2. Power receptacle schematic
1. PDU B
4. Power cord
2. PDU A
3. AC receptacles
Power distribution–Modular PDUs
21