#compression
Amazing how fast media go obsolete. In between other chores this weeken I went through a couple dozen CD-Rs from the past 6-7 years. First there was the shock that I have been backing up data to CD-Rs for at least seven years; then there was the shock that I was able to get about 20+ of those discs condensed down onto 4 DVDs (once I factored out duplicate back-ups, partially filled CD-Rs, etc.) Strange times.
