Brocade Communications Systems Brocade 6520, Справочное руководство

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26 Brocade 6520 Hardware Reference Manual
53-1002705-01
Power supply removal and replacement
4
DRAFT: BROCADE CONFIDENTIAL
Additionally, you can use external labels as a guide. Both the power supply and fan FRUs are
labeled with an airflow symbol on the faceplate to indicate whether the assembly takes in or
exhausts air. The label also appears on the top of the assembly.
ATTENTION
All fans and power supplies must have the same airflow symbol (E or
I
) to be compatible with each
other.
:
FIGURE 7
Examples of airflow symbols
The green E symbol indicates an exhaust unit. This unit pulls air in from the port side of the switch
and exhausts it out the non-port side. This is also called front-to-back airflow or forward airflow.
???This symbol should appear on FRUs with part numbers ending with -F.
The orange I symbol indicates an intake unit. This unit pulls air in from the non-port side of the
switch and exhausts it out the port side. This is also called back-to-front airflow or reverse airflow.
???This symbol should appear on FRUs with part numbers ending with -R.
The chassisShow command will indicate either “forward” or “reverse” airflow.
Power supply removal and replacement
The Brocade 6520 has two power supplies, as displayed in Figure 8 . The Fabric OS identifies the
power supplies from left to right on the non-port side as power supply #2 and power supply #1.
Figure 8
CAUTION
Disassembling any part of the power supply voids the part warranty and regulatory certifications.
There are no user-serviceable parts inside the power supply. Because the cooling system relies
on pressurized air, do not leave either of the power supply slots empty longer than two minutes
while the switch is operating. If a power supply fails, leave it in the switch until it can be replaced.
Maintain both power supplies in operational condition to provide redundancy.
Refer to Table 4 on page 18 for the power supply status LED colors, behaviors, and actions
required, if any.
Determining the need to replace a power supply
Use one of the following methods to determine the status of the power supplies:
•
Check the power supply status LED next to the On/Off switch (see “LED locations” on
page 15)
•
In Web Tools, click the Power Status icon.
AIRFLOW AIRFLOW
E