Questions about Windows Server Backup 2012 on HyperV

Hello,

I plan to deploy a W2012 HyperV with 2 VM : a File Server with DC and an Exchange Server.

However, I have many questions about backup using the standard tool Windows Server Backup 2012 :

1) Should the VM backups be initiated from the VM itself, or from the HyperV ?

2) Is it possible to backup the HyperV itself ?  And will this backup include the VM ?

3) How is it possible to backup to an iSCSI drive ?

4) How is it possible to perform a full restore of a VM from a iSCSI drive ?  Using the boot CD ?  From the HyperV ?

5) The full restore of the only DC of the domain is it possible ?  And how (will the HyperV start and allow restore without DC available) ?

6) Is it possible to tranfer VM from 1 HyperV to another, using this backup on iSCSI drive ?

Thanks in advance for your help.