Chapter 4. Fru Replacement; Power Supply Removal And Replacement - IBM SAN42B-R Installation, Service And User Manual

Chapter 4. FRU replacement

The field replaceable units (FRUs) in the SAN42B-R can be removed and replaced
without special tools. The switch can continue operating during the FRU
replacement if the conditions specified in the procedures are followed.
SFP+ transceiver FRU removal and replacement procedures are described in
"Installing SFP+ and QSFP transceivers and connecting cables" on page 27, as part
of the initial switch installation and configuration. Power supply and fan FRU
removal and replacement steps are described in the following procedures. The
chassis replacement procedure is to be completed by IBM Service personnel only,
and cannot be completed while the switch is operating.

Power supply removal and replacement

The switch has two power supplies, as displayed in Figure 3 on page 5. The Fabric
OS identifies the power supplies from left to right on the nonport side as power
supply #2 and power supply #1.
Attention: 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 7 on page 36 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:
v Check the power supply AC status and DC status LEDs (see Figure 20 on page
v In Web Tools, click the Power Status icon.
v At the command prompt, enter the psShow command to display power supply
Time and items required
Replacing a power supply in the switch requires less than two minutes to
complete.
© Copyright IBM Corp. 2014
Attention: Read "Safety notices and labels" on page xi before removing
or installing any components. Follow ESD precautions (see "ESD
precautions" on page xvii whenever handling FRUs.
36 ). Both LEDs should be green to indicate that the power supply is functioning
correctly. If the DC status LED is amber, there is no power on the cord.
status as shown in this example below:
2498:admin> psshow
Power Supply #1 is OK
Airflow Direction : Portside Intake (Forward)
Power Supply #2 is OK
Airflow Direction : Portside Intake (Forward)
2498:admin>
39