originally posted by MLipton:
The Evancescence of Digital Media
originally posted by Frank Deis:
Keeping pictures electronically works well except for those hard disk crashes that keep happening. With the old system, your house would have to burn down to remove all your pictures. Now it is so much easier to lose everything...
Frank,
This is a subject I've long pondered over, as I have a fair collection of digital photos that I have no desire to lose. The most obvious solution is to archive to CD/DVD, the problem being that the CD/DVD media have an anecdotal history of a significant failure rate in the medium-to-long term (more than 5 years). Since cosmic rays should not in theory affect the optical transmissivity of a CD, I'm not quite sure how the problems arise, but arise they do, it seems. The next option, and one I use for backing up my desktop system at work, is flash drives, but they too have no proven track record of longevity. This leaves us with a third option of an external hard drive, though as you've discovered, disk failures can and do happen (I have a vivid memory of a machine room incident in '78 wherein a power outage resulted in a half dozen disk head crashes of platter drives, the result of which was a room filled with particulate aluminum and a reincarnation of Yma Sumac hitting G above High C).
What this leaves us with as the Best Practice of 2009 is to employ a RAID drive as your backup medium. It still probably doesn't get you more than 10 years per drive, but it has as its benefit the promise of infinite renewal.
Mark Lipton