I don’t believe you, but I’d like to be proven wrong.

I expect you have a UPS that feeds your hosts and networking equipment and something like ZFS for disk redundancy. This protects against the most common failures and is usually enough, but there are still single points of failure in such a setup, that are not as common, not as hard to deal with through manual intervention, and quite difficult to protect with redundancy.

I would be surprised if you are protected against the following single points of failure without manual intervention:

• NAS machine (not just disk) failure. You would need to have a multi-node distributed storage, like Ceph, to protect against this.
• Networking equipment failure. I think you can do some magic with BGP to do this, but I’m not a network engineer and I’ve never set up a redundant network.

Bitnami Helm charts are not maintained anymore. There are no updates for the charts and images in the legacy repository. Try to find a different chart for harbor registry and any other bitnami images and charts you use ASAP