A true cluster is the right way to go.

However, If you REALLY MUST pursue this. I would move all your system DB's to the Luns you will detach/attach.

Make sure...

SQL will scale via federated servers. Naturally, you will want to partition the DB and use multiple filegroups/Files so 2TB limit will not be an issue.

You may want to start...

If reporting includes OLAP, it will absolutely need the new server.

A bit too vague.

SQL version? OLTP? Number of users? Transaction volume?

This configuration is a bit light on resources for a single server, let alone two. A total of eight disks does not give you enough IOPS and as Steve...

NetApp uses a technique called wide striping. Basically, they stripe all the disk in Raid-4 DP (dual parity) and create a pool that you allocate to logical units that you...