Managing Serviceguard 13th Edition, February 2007

Troubleshooting Your Cluster
Replacing LAN or Fibre Channel Cards
Chapter 8354
Replacing LAN or Fibre Channel Cards
If a LAN or fibre channel card fails and the card has to be replaced, you
can replace it on-line or off-line depending on the type of hardware and
operating system you are running. It is not necessary to bring the cluster
down to do this.
Off-Line Replacement
Follow these steps to replace an I/O card off-line.
1. Halt the node by using the cmhaltnode command.
2. Shut down the system using /usr/sbin/shutdown, then power down
the system.
3. Remove the defective I/O card.
4. Install the new I/O card. The new card must be exactly the same card
type, and it must be installed in the same slot as the card you
removed.
5. Power up the system.
6. If necessary, add the node back into the cluster by using the
cmrunnode command. (You can omit this step if the node is
configured to join the cluster automatically.)
On-Line Replacement
If your system hardware supports hotswap I/O cards, you have the option
of replacing the defective I/O card on-line. This will significantly improve
the overall availability of the system. The new card must be exactly the
same card type as the card you removed to avoid improper operation of
the network driver. Serviceguard will automatically recover a LAN card
once it has been replaced and reconnected to the network.
NOTE After replacing a Fibre Channel I/O card, it may necessary to reconfigure
the SAN to use the World Wide Name (WWN) of the new Fibre Channel
card if Fabric Zoning or other SAN security requiring WWN is used.