HP Serviceguard Extension for RAC (SGeRAC) Replacement of I/O Cards, Replacement of LAN Cards

Replacement of I/O Cards

After an I/O card failure, you can replace the card using the following steps. It is not necessary to bring the cluster down to do this if you are using SCSI inline terminators or Y cables at each node.

1.Halt the node by using Serviceguard Manager or the cmhaltnode command. Packages should fail over normally to other nodes.

2.Remove the I/O cable from the card. With SCSI inline terminators, this can be done without affecting the disks or other nodes on the bus.

3.Using SAM, select the option to do an online replacement of an I/O card.

4.Remove the defective I/O card.

5.Install the new 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.

6.In SAM, select the option to attach the new I/O card.

7.Add the node back into the cluster by using Serviceguard Manager or the cmrunnode command.

The Administration menu of Serviceguard Manager contains all the administration operations.

Replacement of LAN Cards

If you have a LAN card failure that requires the LAN card to be replaced, you can replace it online or offline, depending on the type of hardware and operating system you are running. It is not necessary to bring the cluster down to do this.

Offline Replacement

The following steps show how to replace a LAN card offline. These steps apply to HP-UX 11i:

1.Halt the node by using the cmhaltnode command.

2.Shut down the system using /etc/shutdown, then power down the system.

3.Remove the defective LAN card.

4.Install the new LAN 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, and if the system is running HP-UX 11i (B.11.11 or later), you have the option of replacing the defective LAN card online. This will significantly improve the overall availability of the system. To do this, follow the steps provided in the section “How to Online Replace (OLR) a PCI Card Using SAM” in the document Configuring HP-UX for Peripherals. The OLR procedure also requires that 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 the LAN card once it has been replaced and reconnected to the network.

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 online reconfiguration:

136 Maintenance