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Note: The node will restart as soon as the serial number has been written to it.
e. Write the serial number that you noted previously on the blank serial number label on the front
of the node.
Removing and replacing the fibre-channel SFP transceiver on a SAN
Volume Controller node
When a failure occurs on a single fibre-channel link, the SFP transceiver might need to be replaced.
The SFP transceiver is designed to be hot-plugged, so that you do not need to power off the SAN Volume
Controller node.
CAUTION:
Some laser products contain an embedded Class 3A or Class 3B laser diode. Note the following
information: laser radiation when open. Do not stare into the beam, do not view directly with optical
instruments, and avoid direct exposure to the beam. (C030)
Perform the following steps to remove and then replace the SFP transceiver:
1. Carefully determine the failing physical port connection. See the IBM System Storage SAN Volume
Controller 2145 Troubleshooting Guide for illustrations of the fibre-channel port locations.
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Important: SAN Volume Controller nodes are now supported with both long-wave SFP transceivers
and short-wave SFP transceivers. A long-wave SFP transceiver has some blue components that are
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visible even when the SFP transceiver is plugged in. You must replace an SFP transceiver with the
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same type of SFP transceiver that you are replacing. If the SFP transceiver to replace is a long wave
SFP transceiver, for example, you must provide a suitable replacement. Removing the wrong SFP
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transceiver could result in loss of data access.
2. Remove the fibre-channel cable by pressing the release tab and pulling the cable out. Be careful to
exert pressure only on the connector and do not pull on the fibre-channel cables.
3. Remove the SFP transceiver. There are a number of different handling or locking mechanisms that are
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used on the SFP transceivers. Table 20 describes the usual type of mechanisms that are found on a
SAN Volume Controller model. It is possible, however, that the installed SFP transceivers have a
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different mechanism than is indicated.
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Table 20. Instructions for removing the SFP transceiver
SAN Volume Controller model
SAN Volume Controller models 2145-CF8, 2145-8A4,
2145-8G4, and 2145-8F4
SAN Volume Controller 2145-8F2
Note: Other SFP transceivers might have a plastic tag. If so, pull the tag to remove the SFP transceiver.
Important: The customer might be using a non-standard SFP transceiver. If so, the customer should
alert you as to the SFP transceiver to use, and provide the SFP transceiver to you. Always check that
the SFP transceiver that you replace matches the SFP transceiver that you remove.
4. Push the new SFP transceiver into the aperture and ensure it is securely pushed home. The SFP
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transceiver usually locks into place without having to swing the release handle until it locks flush
with the SFP transceiver. Figure 170 on page 161 illustrates an SFP transceiver and its release handle.
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160
IBM SAN Volume Controller Hardware Maintenance Guide
Removal instructions
Locate the release handle that is incorporated into the
SFP transceiver, unclip the handle, and then use the
handle to pull out the SFP transceiver.
Locate the small black locking tag on the bottom of the
SFP transceiver, push it back, and then pull out the SFP
transceiver.
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