Software for Syncing files between storages (Linux)

So I recently quitted Google Drive and downloaded all my data and hoping to keep it on Hard drives myself, They are external plug in types and I want the files synced like it was on my computer. So when I plug it in it copies/syncs the things on my computer, anyone knows somethign like that?

So when I plug it in it copies/syncs the things on my computer, anyone knows somethign like that?

So you want to sync files from a drive whenever you plug it in to the computer? Sounds like a udev + rsync solution. Udev mounts the drive and runs rsync.