Does anyone know of any free/low cost tools which will backup Exchange 2007 on Windows 2008 to a portable hard drive?
I am using the built in Windows backup but would like a second backup just in case.
What is the problem you are solving here? Do you have a reason not to trust the backups currently being taken? Is there a reason why running the backup routine twice to different sources wouldn't be acceptable, for example?
To do a proper Exchange backup, you need an exchange aware backup tool. Those generally are not cheap.
Microsoft took away the brick level backup from Windows Server 2008, so basically all you can do is to do a VSS snapshot and backup the source quenced mailbox.
I have tried using Carbonite Online backup, and it backed up a VSS Mail Database without a problem, but its not free, just $5 a month.