Buy Spinrite. It's not perfect but it's the best thing available for drive maintenance and recovery. I have used it for over 10 years. If the drive is dying it'll take forever, but I've recovered data that was nearly gone due to sector loss. It goes down to the bit level BTW. Someday Steve will release v7 .. someday.
This is the first time I've seen anyone else talk about SpinRite, known about it a long time too
If your data is really important, you should send it to a reputable data recovery service. Using the drive any more (even with a tool like SpinRite) risks further damage.
These people haven't heard of zfs then?
Zfs is just software raid, not an archival /backup solution. Sure, you can hold data on a zfs array for long term, but not without active maintenance (powering the drives periodically, replacing old drives, doing some kind of data refresh / scrubbing) and backups.
I have a feeling USB drives will be readable for a long time to come, considering that we still use the standard almoat everywhere, nearly 28 years after its introduction.
That said, copying the data from old archives into new formats is always a good idea
Edit: I was envisioning actual external hard disk or solid state drives accessible using a USB connection. Thumb drives and other ultra-portable data formats are notorious for poor data integrity over time.
I have a feeling USB drives will be readable for a long time to come
The drives may still be useful, but the data will long be gone. I have a flash drive from 06 that was last used in like 08 09 and most of it's data was gone by 2019. The drive itself is fine. But what was on it has slowly faded away.
Note though that usb Sticks (if you mean that with USB drives) usually get the worst, cheapest quality flash. It's a lottery, and expect nothing in no-name sticks.
* quality in yield, ssd > sd-card/emmc > flash sticks
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