Pdus - HP StorageWorks 6400/8400 - Enterprise Virtual Array User Manual

• The standard power configuration for any Enterprise Virtual Array rack is the fully redundant
configuration. Implementing this configuration requires:
• Two separate circuit breaker-protected, 30-A site power sources with a compatible wall recept-
acle (see
• One dual PDU assembly. Each PDU connects to a different wall receptacle.
• Eight Power Distribution Modules (PDM) per rack. Four PDMs mount vertically on each side of
the rack. Each set of PDMs connects to a different PDU.
• The drive enclosure power supplies on the left (PS 1) connect to the PDMs on the left with a
gray, 66 cm (26 in) power cord.
• The drive enclosure power supplies on the right (PS 2) connect to the PDMs on the right with
a black, 66 cm (26 in) power cord.
• Each controller has a left and right power supply. The left power supplies of each should be
connected to the left PDMs and the right power supplies should be connected to the right PDMs.
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 Command View EVA 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 228481-002/228481-003 PDU placement is back-to-back, plugs facing down, with
switches on top.
• 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.
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
voltages are then routed to PDMs, sometimes referred to as AC power strips, mounted on the two
vertical rails in the rear of the rack.
30 EVA6400/8400 hardware
Figure 16).
Figure 17). The