I have lots of disk space on my main computer, which I mostly use to process photos. I wanted a way to archive my photos, so I initially used CDs, the DVDs, then USB hard drives. Eventually I decided to try a NAS solution, at the time I thought a small D-Link DNS-323 would do, with two disk spaces, that ended up being too small, even with two TB in RAID 1. Finally I looked at some more serious NASes, and I picked Synology because it has some nifty features and it uses a web browser as an interface for all controls. And it has linux as its underpinnings, so that was a perfect match for me :-)
So now my main computer runs Linux, I have 6 TB of disk space on it. And the DS918+ is fully populated with 4 x 16 TB Seagate Ironwolf NAS Pro. I duplicate the contents of the computer to the NAS, and I backup the NAS to 16 TB drives, which I then ship offsite.
I do not open my network to the outside world, not even for myself.
To display images, I have a Smugmug account.