We just had someone ask for a reprint of a
sign we did a "few years ago". A bit of searching and we found the original file from 2002.
We keep everything in yearly / monthly folders for print ready files. (Outlined font, etc)
We also keep a seperate folder for artwork, client supplied files, proofs, etc. That's a folder with the year, inside has the clients names and everything goes into their own folder.
That way we can find files by date... Or by client name easily.
Storage is cheap... $10 a month and google gives you unlimited cloud drive storage (supposed.to be unlimited with 5+ users .. but they don't enforce it). I know someone with 2 petabyte and google doesn't say anything. So why not keep everything?
10tb external hard.drive for backups stored offsite, google drive/Amazon cloud with encrypted files stored in the cloud... And a local version of everything since opening 25+ years ago.
We don't often go back and grab old files .. but when we do, it's worth it. We have many long term clients who appreciate they can ask for a re-do on a
sign we did 15 years ago thats getting pretty worn out and have it look exactly the same as day one.