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As others have said, most of it isn't worth keeping anyway.
The key is moving the data from one media type to another every couple of years to ensure it's all still readable. Personally, I've been moving stuff off of CDs/DVDs to hard drives as big fat hard drives are now cheaper than blank discs.
What I found interesting during this transfer exercise is that older CDs seemed to be of better quality; I have some stuff that had been burned on CD in 1996 that was read back without a hitch. Other discs that were 15 years newer had to be retried multiple times on multiple drives due to read errors - some drives, it seems, are more sensitive than others. I remember when CDs came out, manufacturers were claiming these could be trusted for 100 years. Right.
These are now all part of my regular backup rotation. I'm not too worried yet about JPG or MP4 file formats suddenly becoming unsupported overnight. If support eventually drops in favor of something else, it should be trivial to convert from one format to another in batches.
But I definitely wouldn't trust my only copy of any data to the likes of Dropbox or, heaven forbid, Facebook.
As the demand for optical discs has waned, so has the quality. Back in the 00's I would go through cases of Taiyo Yuden discs on a monthly basis as we had a near perfect record with them. They no longer are in the market as a manufacturer.
(Magnetic) Tape seems to be the thing that large data farms are backing up to... maybe that is why there is such a shortage of the media for everyone else.... Backing up everyone's worthless facebook posts and stupid images. There are more photos taken now per minute than the entire 19th century
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