OK it is a little out there.  By storing data in DNA Harvard Scientists George Church and Sri Kosuri have stored 700TB in 1 gram of material (70 Billion copies of a book).  Which makes us wonder how long it will be before there is a High-Rely DNA backup drive.  The medium is very dense, and stable (data lasts for years). The average access times would be low… hours or even days to retrieve. But while you couldn’t read it very quickly, what an opportunity to store large amounts of data!