Sorry to revive this thread but I have encountered one final dilemma during the SQL Install...!

When installing the second instance to the existing cluster, in addition to giving the new instance it's own Network name, does it have to have a different instance name too or can I have 2 default instances with different network names?

So could I have the following both hosted on the same cluster:

cluster1/MSSQLSERVER

cluster2/MSSQLSERVER

Or would it have to be something like:

cluster1/MSSQLSERVER

cluster2/instance2

The first default instance is already on there.

Thanks