Managing Serviceguard Sixteenth Edition, March 2009

Offline 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.)
Online Replacement
If your system hardware supports hotswap I/O cards, you have the option of replacing
the defective I/O card online, using the HP-UX olrad command. The new card must
be exactly the same card type as the card you removed. Serviceguard will automatically
recover a LAN card once it has been replaced and reconnected to the network.
For more information, see the olrad(1m) manpage and the Interface Card OL* Support
Guide at http://docs.hp.com -> High Availability -> System
Administration. See also “Removing a LAN or VLAN Interface from a Node”
(page 335).
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.
After Replacing the Card
After the online or offline replacement of LAN cards has been done, Serviceguard will
detect that the MAC address (LLA) of the card has changed from the value stored in
the cluster binary configuration file, and it will notify the other nodes in the cluster of
the new MAC address. The cluster will operate normally after this.
It is also recommended that you update the new MAC address in the cluster binary
configuration file by re-applying the cluster configuration. Use the following steps for
on-line reconfiguration:
1. Use the cmgetconf command to obtain a fresh ASCII configuration file, as follows:
cmgetconf -c clustername config.ascii
2. Use the cmapplyconf command to apply the configuration and copy the new
binary file to all cluster nodes:
cmapplyconf -C config.ascii
Replacing LAN or Fibre Channel Cards 369