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Essentially it is another hard drive, so easy to add and remove backup data.

The discs will always be cheaper than any other storage medium for replacements and extension. USB 3.0 flash drives win.Ĥ, this is easy, blue ray wins. Few if any burners can surpass the write speed of USB 3.0, probably not in your budget though. If I recall, "-R" means record or write once.Ģ, if you will run backups less than once every 6 months or you don't have a reason to access your backups at least once every 6 months, then go disc.ģ, this one depends on the grade of burner or your ability/willingness to let it run for long periods. Refreshed is used to mean they are plugged in to computer once in awhile, at least once every 6 months, or else they lose the data.ġ Ease of removing files from backups you don't need each cycle?ġ, if you wish to be able to remove files you don't need from backups then either USB flash drive or rewritable blue ray discs. They rarely fail due to write amounts, they fail because substandard design/engineering, and because they are not refreshed. Yea flash drives do fail but not as often as you would expect the technology has matured. It still has competitive data density compared to its cost, however, its ease of use is relegating it to exactly your question, backups. And IMO optical media is not on the way out. Many discs, music, data, DVD, blue ray, have a shelf life for how long the actual storage material of the disk remains viable.

There composition can differ and some are better for long term storage, as in decades even in less than optimal storage conditions. Almost any grade burner can be used on any disk with the same effect, but not all disks are created equal.