Thoughts on longterm photo and video storage? As can be seen from the…

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Thoughts on longterm photo and video storage?

As can be seen from the older family photos I've uploaded, physical photos--even when stored under reasonable conditions--degrade quite a bit over time. They're also at risk of fire, flood, vermin, theft, and forgetfulness. Digital photos are also at risk of being lost due to drive failure, obsolete file/media formats, and so on.

So far, the best solution I've found is uploading them to archive.org. Their intention "...is to store and make materials [available] in perpetuity." They keep redundant backups, and they're more likely to keep up with changes in file formats. They don't currently charge money (they say it costs them about $2/GB of data).

Anyone have thoughts on potential downsides? Alternatives?