Windows Files and Volumes
Owners of Intel-based Macs can run Windows alongside Mac OS X, using either Apple's Boot Camp software (which puts the entire Windows installation on a separate hard disk partition) or virtualization software such as Parallels Desktop or VMware Fusion (which stores the Windows environment in a special disk image file). Either way, the presence of a second operating system, with its own applications and files, increases the complexity of your backup needs.
If you use Windows only occasionally and don't store much data on your Windows volume, you might consider forgoing Windows backups altogether. Reinstalling Windows and a few applications (as you might have to do in the case of a disk problem) is annoying but not the end ...
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