Oracle single instance rac installation

hi,
do I need minimum of 2 servers in order to carry out 11.2 oracle single instance RAC installation ? or that its possible with one node? and then can add more nodes in future?
is there any article/documents on this?
thanks

http://download.oracle.com/docs/cd/E11882_01/rac.112/e10718/clonerac.htm#CHDGFHCA
"The cloning process assumes that you successfully installed an Oracle Clusterware home and an Oracle home with Oracle RAC on at least one node. In addition, all root scripts must have run successfully on the node from which you are extending your cluster database."
also
http://download.oracle.com/docs/cd/E11882_01/rac.112/e10717/intro.htm#BEIHEJGD
"Overview of Cloning and Extending Oracle Clusterware in Grid Environments
Cloning nodes is the preferred method of creating new clusters. The cloning process copies Oracle Clusterware software images to other nodes that have similar hardware and software. Use cloning to quickly create several clusters of the same configuration. Before using cloning, you must install an Oracle Clusterware home successfully on at least one node using the instructions in your platform-specific Oracle Clusterware installation guide.
For new installations, or if you must install on only one cluster, Oracle recommends that you use the automated and interactive installation methods, such as Oracle Universal Installer or the Provisioning Pack feature of Oracle Enterprise Manager. These methods perform installation checks to ensure a successful installation. To add or delete Oracle Clusterware from nodes in the cluster, use the addNode.sh and rootcrs.pl scripts."
it doesnt directly say its possible and I cant find full documentation on how to go about it ... but seem like its possible ?
Edited by: user9198889 on Feb 24, 2010 5:01 PM

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Oracle Clusterware                                                   10.2.0.1.0
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Oracle single instance rac installation

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