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Level 03c, May 2011
Chapter 5. Power requirements
General requirements
The z10 BC requires 3 customer power feeds:
1. Two identical three-phase feeds to the A frame - one to the front, one to the
2. One single-phase feed for customer-supplied service outlets for the Hardware
The service outlets require standard 100V to 130V or 200V to 240V, 50/60Hz,
single-phase power.
z10 BC operates with:
v 50/60Hz AC power
v Voltages ranging from 200V to 480V
v Three-phase or single phase wiring
Important Power Selection Considerations
As you select features for your z10 BC server, be aware of the following when
choosing server power:
v If you choose single phase power, you can have a maximum of two I/O drawers.
v If you choose single phase power, you will have unbalanced power.
v If you choose three phase power, you may have either balanced or unbalanced
v If you choose three phase power, you can guarantee balanced power by
Power installation considerations
z10 BC operates from two fully-redundant power supplies. These redundant power
supplies each have their own line cord, allowing the system to survive the loss of
customer power to either line cord. If power is interrupted to one of the power
supplies, the other power supply will pick up the entire load and the system will
continue to operate without interruption. Therefore the line cord for each power
supply must be wired to support the entire power load of the system.
Note: The power cord sets provided are for use only with this product.
For the most reliable availability, the line cords in the front (A) and the rear (B) of
the A frame should be powered from different PDUs. The A line cord exits the front
of the A frame and should be connected to one PDU. The B line cord exits the rear
of the A frame and should be connected to a different PDU than the A line cord.
See "Dual power installation" on page 101 for examples of typical redundant wiring
facilities.
© Copyright IBM Corp. 2008, 2011
rear, OR two identical single phase feeds to the A frame - one to the front, one
to the rear.
Note: Refer to the Appendix "Dual power installation" on page 101 for the
correct wiring method for your particular power distribution equipment.
Management Console and its modem.
power, depending on server configuration.
selecting FC 3002, Balanced Power Plan Ahead. This feature adds two more
Bulk Power Regulators to each side of the power supplies, assuring adequate
and balanced power for all possible configurations.
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