IBM x 340 Series Hardware Maintenance Manual page 78

Considerations when combining failover and hot-plug
functions: If your operating system supports hot-plug PCI adapters and the optional
redundant NIC adapter is installed in a hot-plug PCI slot, you can replace the NIC
adapter without powering off the server — even if it is the primary Ethernet
controller. Disconnecting the Ethernet cable from the primary Ethernet controller will
cause the Ethernet traffic to switch automatically to the secondary Ethernet controller.
This can be very useful if a faulty adapter causes a network problem, or if you want to
upgrade the primary adapter hardware.
Note: If you hot-replace the primary adapter while the Ethernet traffic is being
Configuring for failover: The failover feature currently is supported by OS/2™,
Windows NT Server, and IntraNetWare. The setup required for each operating system
follows.
IBM Operating System/2 (OS/2):
Note: The OS/2 operating system does not support hot-plug operations.
1.
2.
3.
4.
5.
6.
The failover function is now enabled.
Windows NT Server:
IBM offers hot-plug support for Windows NT Server Version 4.0. Failover can work in
conjunction with hot-plug support or independently. If you are not using hot-plug
support, go to "Windows NT Server failover setup" on page 71.
Windows NT Server hot-plug setup:
download from the IBM Web site at:
http://www.pc.ibm.com/support
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Hardware Maintenance Manual: xSeries 340 Model 6RY
handled by the secondary Ethernet controller, the traffic does not
automatically switch back to the primary adapter when the primary adapter
comes back online. See "Configuring for failover".
Add the redundant NIC adapter according to the instructions that are provided
with the adapter.
Use the ServerGuide CDs to install the AMD PCNet Ethernet Family adapter
device driver.
Using the MPTS Utility program, select the driver from the list and select the Edit
button.
Note: Only one driver instance needs to be loaded for each redundant pair of
Ethernet controllers.
Change the PermaNet Server Feature keyword to TRUE and specify the Primary
and Standby slots that contain the redundant pair.The integrated controller is
located in slot 2 (PCI bus A slot 2).
To enable the writing of messages to the IBMCOM\LANTRAN.LOG file when a
failover occurs:
a. Copy the file PCNETOS2.EXE from the root directory of the diskette that is
created using the ServerGuide CDs to your hard disk drive.
b. Add the following statement to the CONFIG.SYS file:
Run=d:\path\PCNETOS2.EXE
where d and path are the drive and path to which you copied
PCNETOS2.EXE.
Restart the server.
IBM Netfinity Hot Plug PCI for Windows NT Server 4.0 package is available for