IBM eServer 240 xSeries User Reference Manual

Also see for eServer 240 xSeries: Configuration and options guide

Contents

Note: Your operating system determines the maximum number of IBM Netfinity10/100 Fault Tolerant Adapters that you can install in your server. See thedocumentation that comes with the adapter for more information.Special considerations when combining failover and hot-plugfunctionsIf your operating system supports hot-plug PCI adapters and the optional redundantNIC adapter is installed in a hot-plug PCI slot, you can replace the NIC adapterwithout turning off the server — even if it is the primary Ethernet controller.Disconnecting the Ethernet cable from the primary Ethernet controller will cause theEthernet traffic to be automatically switched to the secondary Ethernet controller.This can be very useful when a network problem is caused by faulty adapterhardware or when you want to upgrade the primary adapter hardware.Note: If the primary adapter is hot-replaced while the Ethernet traffic is beinghandled by the secondary Ethernet controller, the traffic does notautomatically switch back to the primary adapter when the primary adaptercomes back online. See “Configuring for failover.”Configuring for failoverThe failover feature currently is supported by OS/2, Windows NT Server, andIntraNetWare. The setup required for each operating system follows.OS/2Note: The OS/2 operating system does not support hot-plug operations.1. Add the redundant NIC adapter according to the instructions provided with theadapter and in “Working with adapters” on page 53.2. Use the ServerGuide CDs to install the AMD PCNet Ethernet Family adapterdevice driver. (Refer to the ServerGuide topic.)3. Using the MPTS Utility program, select the driver from the list and click the Editbutton.Note: Only one driver instance needs to be loaded for each redundant pair ofEthernet controllers.4. Change the PermaNet Server Feature keyword to TRUE and specify thePrimary and Standby slots that contain the redundant pair. Refer to“System-board component locations” on page 99 for the locations and slotnumbers of the PCI slots. The integrated controller is located in slot 2 (PCI busA slot 2).5. To enable the writing of messages to the IBMCOM\LANTRAN.LOG file when afailover occurs:a. Copy the file PCNETOS2.EXE from the root directory of the diskettecreated using the ServerGuide CDs to your hard disk.b. Add the following statement to the CONFIG.SYS file:Run=d:\path\PCNETOS2.EXEwhere d and path are the drive and path to which you copiedPCNETOS2.EXE.6. Restart the server.36 IBM xSeries User's Reference