I am wondering what the best practice is for storing output descriptors. Currently I have them offline on USB drives. However, there is an obvious risk of physical/environmental degradation over time. My instinct is that it would be foolish to save them on a cloud. I guess the tradeoff is physical degradation vs. being hacked. I'm guessing the latter is probably more likely.
USB drives are not the best because your USB drives more easily to have technical problems than with HDDs. Any drives can have technical problems and if you can not retrieve data in drives, you lose your backups.
Backup-wise practice will be making your backup in different drives, different formats like drives, paper, steel sheets. If one is damaged, you will have others to use and recover your wallet.
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