Seriously, does anyone backup to tape anymore?
Yes, people still backup to tape. LTO4 tapes are: 1) cheap - 1-2TB encrypted compressed for about $35/tape (cheaper than a Fry's disk!). 2) Easy to keep for a long time (I can keep a backup for 2+ years. That can be hard (or expensive) to do with a disk-to-disk based solution. If I want to use disk-to-disk and keep, say, one monthly backup for a year, I need at least 3-4x the disk space in my local disk-to-disk solution, and another copy in a remote location - 6-8x my disk space total. That costs a lot. Many people still use tape and will continue to do so.
The solution of problems is the most characteristic and peculiar sort of voluntary thinking. -- William James