How to replace a network interface card (NIC) in a VERITAS Cluster Server for Windows NT environment
Upon installation, VERITAS Cluster Server (VCS) for Windows NT modifies certain Registry values to enable the creation of Virtual Network Resources. It is therefore important that no changes are made to the system's network settings (through the Network applet in Control Panel or the Network Neighborhood icon on the desktop) while under VCS control, since the operating system will not recognize these changes correctly. Control of networking settings must be returned to the operating system before changes of this type can be made.
Any changes made to TCP/IP settings (e.g. IP address, subnet mask, default gateway) must be conducted using the IPCHANGE utility provided with VCS to surrender VCS control of these components.
The procedure for replacing a physical NIC on a VCS node depends on whether any changes are required to the operating system network settings, ex. new drivers or changes to the binding order.
If the new NIC is identical to that which is being replaced (and hence no changes are required to the operating system network settings) simply:
1. Migrate all service groups to another node in the cluster
2. Shut down the system and replace the NIC.
If the new NIC is not identical to the old NIC and it requires changes to the network settings in Windows NT (e.g. news drivers or bindings changes), the following steps must be taken:
1. Migrate all service groups to another node in the cluster.
2. Backup the VCS configuration files. These can be found in the following path:
C:\Program Files\VERITAS\cluster server\conf\config
3. Uninstall the VCS software entirely from the cluster node (including any agent software and hotfixes).
4. Shut down the cluster node and replace the NIC.
5. Restart the server and install the new NIC, making the necessary changes to the operating system.
6. Reinstall the VCS software, plus any agents and hotfixes.
7. Reinstate the configuration files and start VCS.
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