[The most cost-effective way to store a DNA sequence … is the DNA itself] (http://www.youtube.com/watch?v=9SzwiZMSBeQ)

DNA material, if stored in dark, cool and dry space, can survive thousand years. It is a lot more cost-effective than storing the sequence on tapes, which needs to be rotated and maintained, and will degrade overtime. Proper storage of DNA can keep it in good condition for multiple epochs.