Firstly, I believe the clustering option to only be available to the Enterprise or Datacentre edition of Windows 2003 R2
Not with windows, but it depends what applications your running. Exchange, SQL Server, IIS support clustering for example.
Secondly, has anyone else set this up and seen an improvement in comparison to what existed before?
So whats the clustering for then? I've found DFS to be unreliable.
Thirdly, having looked in to large storage solutions I would look to put in place two large NAS boxes and setup DFS, can anyone see a flaw in this?
Printer pooling? Use a Linux box with failover?
Having said this does anyone know of a good way to do the same with Printers/Printer Queues