How will you insure the information you wish to save, on drives, solid state, etc, will survive the inevitable EMP? Do you store everything in a well grounded Faraday Cage?
As a storage medium, DVDs at least were EMP proof, although you still need to protect the reader player device, PC, TV etc..
I wonder how the CDs that NASA sent up on various satellites are going? All that radiation is it breaking down the plastic? I found it very amusing that there was an assumption that some alien who came across the probe in the future, might have a CD player with them.