Attaching Power Cords - HP Surestore Disk Array 12h - And FC60 Service Manual

Attaching Power Cords

Each enclosure (controller and disk enclosures) contains dual power supplies that must be
connected to the power source (PDU). When connecting power cords for high availability
installations, connect one enclosure power cord to one source (PDU) and the other power
cord to an alternate source (PDU). To complete the power connection, follow the steps
below.
1. Set the power switch on the disk enclosures to OFF. The switch is located at the front,
top, right corner of the enclosure.
2. Set the two power switches on the back of the controller enclosure to OFF (0).
3. Connect power cords to both power supplies for each enclosure. Attach one end of the
power cord to the enclosure power supply receptacle and the other end to the PDU/
PDRU receptacle.
The controller enclosure requires special ferrite bead power cords (part no.
Note
5064-2482) for FCC compliance.
When connecting power cords, connect the power cords from the right-side power
supplies to the PDUs/PDRUs on the right side of the rack and connect the power cords
from the left-side power supplies to the PDUs/PDRUs on the left side of the rack. This
method ensures that each enclosure power supply is connected to a separate power
source to ensure high availability.
4. Connect the PDUs/PDRUs into their respective power sources.
Choose outlets according to the following guidelines:
– Redundancy. To extend the redundancy of the product, attach each cord to a
different PDU. This is represented in
duplicate letters in each disk enclosure.
– Reliability To avoid cascading faults for a group of disk enclosures that are plugged
into the same PDU, distribute the redundant power cords among different PDUs.
This is represented in
Figure 57
Figure 57 and Figure 58
and Figure 58 by the absence of
by the absence of duplicate pairs of
Attaching Power Cords
149