Aashish Ramdas from the Windows Virtualization Team Blog comments:
SMB is getting a lot of attention with Windows Server 2012, and we’ve had questions from a few customers regarding the inter-play between SMB shares and Hyper-V Replica. In this post we’ll share our experience around setting up and using various configurations involving SMB shares and Hyper-V Replica. The issue we were expecting to run into is the apparent lack of authorization to use the SMB share, when using remote management.
Read more at: Using SMB shares with Hyper-V Replica