Can I Split an Automated Backup Across Two Portable Drives?

I found other topics close to this one, but none really seemed to answer the question. I want to make incremental backups of my computer's large hard drive but my backup device is only just a little bit bigger than the source. That means that a single portable backup disk drive can only hold only a few incremental backups before it fills up. However, I have a second backup drive that I could also employ. I would like to find a way that I could designate both drives as the Target, and have TI automatically use both, splitting the files as necessary without any intervention on my part. TIA.

Dale,
I agree with Bobbo's analysis. I also believe that moving files around would be risky, especially if you need to perform a restore operation using rescue media. Also, you will have to delete your only backup prior to starting a new backup chain.
If you are able to buy a bigger hard drive, then you could still use your existing external drive for periodic backups...then disconnect and store in a safe or off site.
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