Like many photographers, I seen to have an unending appetite for storage. For years, photographers used a variety of methods to backup data with many choosing optical media. But is that really the most cost effective media given the rapidly declining prices of hard drives? Two terabyte internal 3.5″ sata hard drives can be had for $100 on sale. That’s 5 cents per gigabyte. At that price, there’s really no reason to use optical media to backup data. Here’s a breakdown of what various media cost on a per gigabyte basis. The calculations are based on actual storage capacity, not the stated manufacturer capacity. As many know, the stated capacity is often larger than the effective capacity due to the way Windows and other OS define gigabytes. To calculate effective gigabyte under Windows, use this conversion tool and select gigabyte (10^9 bytes) as the source and gigabyte [GB] as the target.
You can also download this Open Office spreadsheet to use your own calculations.