Bitcoin Core Wallet.dat [patched] -

Always keep 2-3 backups. If one file corrupts, you have others.

The wallet.dat file is a piece of Bitcoin’s original vision: . No third party holds your keys. No account recovery via email. No “forgot password” button. Bitcoin Core Wallet.dat

You can simply copy the wallet.dat file to a USB drive or external hard drive. Always keep 2-3 backups

Corrosion, bitrot, and device failure are real. Use the 3-2-1 rule : three copies, two media types, one offsite. two media types