File Storage with IPFS

Hi guys

I recently got into IPFS and I was amazed by how awesome it is to be able to share files with a peer to peer system.

Though I noticed that even after I closed the daemon and deleted some files from my computer and from all the cache including .ipfs some were still reachable with the hash and some weren’t.

Why does this happen? Does this have to do with the size of the file? Will files stay permanent even though I didn’t pin them?

But the way, one of the files that I completely deleted it from my computer and cache could still be opened with cat after a week from another machine does this happen because it stays on the infura cache? Or if it doesn’t why does it happen?

Best Regards,