If I purchase Windows server 2012, I'd like the portability of moving my server to another compatible box, or at least for backup by installing the OS onto the external drive. My current machine has USB3 and I'd rather imagine a USB3 compatible 2TB external hard drive would be fast enough. Speed is not that critical. I'd rather stay away from raid systems and just keep it very simple.
Is this practical and what external drive would you recommend or would you avoid external and if so, why? What are some of the pros and cons here, internal vs external boot C drive?
Are there compatibility issues, drives I should avoid, etc?