TechARP found a corruption rate near 10% for CD-Rs recorded 7 to 9 years ago, after storage in ideal conditions. On some, one or more individual
files could not be recovered; others were not reliably readable on two separate drives. "In the past, hard disk drives were small (in capacity)
and costly. To make up for the lack of affordable storage, many turned to CD-Rs. As it became common to store backups and personal pictures,
videos, etc. on CD-Rs, the lifespan of these discs became a concern. According to manufacturers, CD-Rs should last for decades. Some even
quoted an upper limit of 120 years based on accelerated aging tests! That sure is a long time, isn't it? But will CD-Rs really last that long?"
With the prices of hardrives falling and the ease of use, I suggest using them for your back up. Cd's may not retain your data on a long-term basis. I always advocate redundancy, so created a multi-level back-up system. Use cd's to make temporary back-up (frequent use), back-up your data to a stationary harddrive (traveling harddrives have more opportunity for malfunction and failure), then back-up your data to a remote back-up site (online storage/back-up).
How important is your information?
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