"CrashPlan doesn't delete your backups after 30 days (they keep everything as long as you're subscribed), but the upload speed is so horrendously slow I couldn't upload the entire photo library plus videos (~300 GB or so) in the month I was subscribed."
That problem, at least, seems to have improved. I backed up ~250GB a couple of months back and while I don't recall the exact time - might have been several days - it was certainly well under a month.