Best Practices Overview For Ac Power Connections; Two Independent Customer-Supplied Pdus - Dell EMC VMAX3 Series Site Planning Manual

Best Practices for AC Power Connections

Best practices overview for AC power connections

To assure fault tolerant power, external AC power must be supplied from independent, customer-
supplied, power distribution units (PDUs) as shown in
For systems operating from three phase AC power, two independent and isolated AC power
sources are recommended for the two individual power zones in each rack of the system. This
provides for the highest level of redundancy and system availability. If independent AC power is
not available, there is a higher risk of data unavailability should a power failure occur, including
individual phase loss occurring in both power zones.
Before connecting external AC power to storage bays, verify that the bays have been placed in
their final position as explained in the installation guide.
Figure 31 Two independent customer-supplied PDUs
™
Dell EMC VMAX3
88
Power feed 1
Circuit
Circuit breakers - Numbers
27
breakers
28
29
on (|)
30
...
Customer's
PDU 1
™
Family Site Planning Guide VMAX 100K, VMAX 200K, and VMAX 400K
Figure 31
Power feed 2
Circuit
Circuit breakers - Numbers
8
breakers
9
on (|)
10
11
...
Customer's
PDU 2
on page 88.