IBM TotalStorage 2109 M12, Инструкция по установке и обслуживанию

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Removing and replacing a power supply or filler panel
Use this procedure to remove and replace a power supply. The switch can continue
to operate during the replacement if at least one power supply continues operating
for every four 16–port cards that are installed. You need a minimum of two power
supplies.
Note: You do not need to notify the switch of a hot-swap request before you
remove a power supply. Power supply filler panels are not required to ensure
correct air flow.
The left power connector provides power to the power supplies in slots 1 and 3.
The right power connector provides power to the power supplies in slots 2 and 4.
The power connectors and the power supply slots are color-coded to identify which
power connectors provide power to which power supply slots. See Figure 12 on
page 3 for the location of the power supplies.
Attention: To protect against ac failure, you need a minimum of one power supply
in slot 1 or slot 3, and one power supply in slot 2 or slot 4. If only two power
supplies are installed and they are both installed in slots corresponding to the same
power cable, unplugging a single power cable will power down the entire chassis.
Attention: If adequate power is abruptly lost, such as through removal of a power
supply, the entire switch is powered down. The power off order that the
powerOffListSet command designates is not followed.
Attention: Disassembling any part of the power supply voids the part warranty
and regulatory certifications.
CAUTION:
No user-serviceable parts are inside the power supply.
Time required
Less than 5 minutes
Removing a power supply or filler panel
Perform the following steps to remove a power supply or filler panel:
1. If the switch is going to operate during the replacement procedure, check the
LEDs to verify that the minimum of two power supplies are functioning before
you uninstall the power supply.
2. Remove the power supply or filler panel from the chassis. See Figure 39 on
page 76 for the location of the power supply.
Chapter 6. Servicing the M12
75