Did SBS come preinstalled from Dell on the T420? If not, and you purchased the license separately, then yes you can move it to another machine. If so, then that OEM license for SBS cannot be transferred to another machine. You could buy another SBS license for the new machine, or another option: [URL] You can simply do a backup and bare-metal restore to a new machine to move it.
Hi, We have a PowerEdge T420 with Windows SBS 2011. We want to upgrade the hardware to a rack mountable machine. Could we buy a bare rack mountable machine (no OS) and transfer our Windows SBS 2011 and its licences from T420 to the new machine? If possible, which is the best way to transfer the OS? Through restoring a Full Backup  to the new machine?
Upgrade to Rack HW