Hi, I am a new switcher and expecting my iMac to arrive within days. I did a search for this topic before posting, but could only find scattered references to it. I'd like to run Win 7 on virtualization software, but not sure of the best way to back up, as I've been reading a lot about how Time Machine (unless you configure it not to) will save the VM folder as one large file, which of course could make the back up tens of GBs and bloat a drive quickly. I'm planning to connect an external HDD partitioned for both Time Machine (for incremental backups) and Superduper(for more easily bootable restore). VMware Fusion (for instance) recommends backing up within the VM itself. But this alone doesn't seem like a good strategy for catastrophic failure of a HDD. Just wondering then, what the best way is to back up Windows files and Apps to an ext. HDD with either Time Machine and/or Superduper?