Agreed that this was one of the issues I had with Backblaze - I constantly would lose all of my external drive backups when I went on a business trip, come back, and all my backups would be gone and I would have to start over again.

I finally ended up just purchasing multiple hard drives and using superduper to clone/backup.

Crashplan wasn't an option - would take 60 days to do a 1 Terabyte backup, and I don't leave my laptop connected to the externals that long.

I'd be willing to pay more money to backblaze to have them retain my external hard drivers for a longer period of time.