I have a 2 node active/passive cluster running SQL2008 with SP1.

Installation was performed by command line script using a config file.
Started with 1st node with /action = "InstallFailoverCluster". Second node
was installed with a diff config file using the /action= "Add Node".
Operational for over 6 months.

Node 1 has had a hardware failure requiring a re-install of OS and SQL. The
Instance which is also a production instance is now running on second node.

What /action parameter do I use(INSTALLFAILOVERCLUSTER or ADDNODE or
something else) to re-install SQL on the rebuilt node? Will the re-install
have any impact on the second node which is running prod?

Tom,
I have replied you in your other thread at
microsoft.public.sqlserver.clustering. If you have any further questions,
please respond in that thread.

Thanks.

Best regards,
Charles Wang