I assume you’re not really experienced with storage servers? Then I would likely recommend a Synology NAS. They give you great software that you can easily configure without the need of deeper knowledge of the inner workings. I started with a Synology and didn’t regret it. It just worked and gave me reliable storage so I could concentrate on the other parts of my homelab. It comes with a price though and you mostly pay for the software.
If you aren’t afraid to get your hands dirty or prefer to use an open source storage solution from the beginning, you might consider Unraid or TrueNAS. The latter is more “enterprisey”, the former seems to be more beginner friendly (but I haven’t used it personally).