IBM SAN256B-6, Installation, Service And User Manual

Page: 75 / 292

v Electrical caution and danger statements in “Safety precautions” on page 7 and “Facility requirements”
on page 9
v
Power supply specifications section in the Appendix B, “Product Specifications,” on page 231 for power
supply requirements of your device.
About this task
Perform the steps to provide power that are applicable to your power supply model. Observe the
following for all power connections:
Procedure
1. Connect each power supply to a different power source or circuit to provide full redundancy.
2. Route the power cords so they will be out of the way when connected to the power source. Ensure
that the power cords have a minimum service loop of 15.2 cm (6 in.) and are routed to avoid stress.
3.
Remember that power is supplied to the device as soon as the first power supply is connected to a
power source.
Connecting power cord to AC power supplies
About this task
Complete the following steps to connect the power cord from the facility AC power source to the device
's AC power supply. Before connecting to power, be sure to observe all "Power Precautions" in “Safety
precautions” on page 7. In addition, refer to the power supply specifications and requirements in
Appendix B, “Product Specifications,” on page 231.
Procedure
1.
Remove the protective cover if it is still installed over the top air vents on the port side of the chassis.
Refer to “Removing the protective cover” on page 42 for instructions.
CAUTION:
Remove the protective cover on the port side of the chassis before applying power. This cover is
attached over the air vents. If not removed, the chassis can overheat and eventually shut down.
2. Install all power supplies provided for your device if not already installed. Refer to “Installing a
power supply” on page 168 for procedures.
3. When installing device in a rack, route power cables from power distribution units (PDUs) so they do
not cover air vents in chassis.
4. Connect the provided AC power cords to a power source with voltage of 200–240 VAC, 50/60 Hz or
optionally to a power source with voltage of 100–120 VAC, 50/60 Hz.
DANGER
High Touch Current. Earth connection essential before connecting supply.
Note: Use of the high-voltage line (200–240 VAC) is highly recommended because of better
power-conversion efficiency. With 120 VAC primary input, the power distribution unit (PDU) supplies
roughly half the available wattage, which can limit blade and port configurations. For a "fully-loaded"
chassis with maximum supported blades and optics, two power supplies connected to 200–240 VAC
are required for full N+N redundancy. For details on power supplies required for operation and high
availability, refer to "Power supply requirements" and "Power consumption" tables in the Appendix B,
“Product Specifications,” on page 231.
5. Route the cords so they will be out of the way when connected to the power source. Ensure that the
power cords have a minimum service loop of 15.2 cm (6 in.) available and are routed to avoid stress.
Initial Setup and Verification
47
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|