Windows server 2012 Boot From External Drive Pros / Cons

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?
Grover McBroomAsked:
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David Johnson, CD, MVPOwnerCommented:
you're biggest problem will be hardware compatibility you can certainly boot from a USB device. Though each time you change the physical device it will have to do a hardware and network detection.

If you backup you will get a .vhd and you can boot from .vhd.. I'm curious as to what you think is the difference between just removing an internal drive and putting it in new hardware and an external drive?
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Scott GorcesterCTOCommented:
I would not recommend this configuration the performance may suffer and the USB connection presents  a point of failure. I typically boot physical systems from a pair of drives in a RAID1 Mirror.

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Grover McBroomAuthor Commented:
Thanks.
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