I have a hyper-v host that runs our clients SBS server as a virtual. There are 3 VHD drives in use all sitting locally on the host. One is for the OS, one is for Exchange and one for data. We are moving them over to a new host and will be using iscsi as storage. We are copying the VHD's to the new location by using XCOPY & FASTCOPY and we have had success with moving the OS drive 250gb and Exchange 525gb but the data drive just wil not copy, its about 800gb. Each time its failed its said Incorrect Function. Im suspecting there is some corruption somewhere but I could do with getting this copied today so I can ge them working for Monday, an integrety chack can be carried out later. Is there a way to just brute force this copy over to the new server so we can mount and test this weekend?