Hi,
If you just back them up you MIGHT be able to restore, but i wouldn't bet on that. The HyperV method places the guest in backup mode using VSS (i think) which gives you a consistent copy to restore from. Think of it as you would a database, you dont just backup the database files, you have to place the database in backup mode (quiesce it) and then backup the files.
From a licensing point of view you'll need a Enterprise Client License to use this functionality. If the guest has any databases running in it, or drive mappings direct to a SAN lun, you'll need to use the standard client inside the guest (Standard Client License + DB/Application Pack).
If you wish to backup striaght to tape from the HyperV hosts, you'll need a Enterprise Server license.
Sounds like a lot but you only need these four licenses (if you want the whole bunch of features i described) to protect ALL guest servers. Example, you have 1 HyperV host with 20 guest hyperV servers of which four are running SQL, two are running Exchange. Still only need to have the 4 licenses (ENT CLT, STD CLT, DB/APP, ENT SERV). You'll notice that you basically just license the host, and unlock features you want to use once for ALL the guest.
The higher the number of guest, the more economical it gets
Hope that makes sense.
