The answer is yes. SQL server cluster supports side-by-side installation.

so many same answers 🙂

let's pay attention to low carbon.

thanks a lot

i always like to say HADR - combining HA and DR together.

active/passive, active/active are obsolete terms. Now the term is multi-instance.

if using vlan, clustering could be considered as a DR solution.

BTW, based on this link, http://connect.microsoft.com/SQLServer/feedback/details/353894/add-support-for-multi-subnet-clusters, multi-subnet will be supported soon.

Please refer to below link about sql server 2008 cluster.

http://msdn.microsoft.com/en-us/library/ms189134.aspx

I doubt why you want to install sql server 2008. SQL Server 2005 also support multi-instance. Have you identified...

good summary

yes, and it's easy to change the order when using this method. For order by case, the query need to be changed, so the application need to be changed.