Before I worked at my current job the IT company they used for their website, computer items etc sold them a NAS. They pay quite a bit for it each month and now it can't be updated and is not secure anymore.

We have a small store that is not part of a chain. Or stock keeping and register are all with a different company and run online. If we lost the files on the NAS it would be annoying but our store would not stop running. There is no sensitive privacy information in the files and I doubt we have more than 3gig of data on it. (Very very high estimate, it is maybe 20 excell files and 300 medius quality pictures.)

Am I correct in thinking that we do not need a NAS? Would Microsoft One Drive do the same job of storing the files in a secure place incase the computer dies?