My story started many years ago when I used to back up pictures to CD-ROMs. In fact, I made two copies of each CD. Unfortunately, a number of them became unreadable and I lost many pictures of my kids youth. I then moved to a tape drive with offsite rotation. (I’ve been at this for a long time!)
My current setup is fairly complicated, and I would say severely overkill. However, my current house is on our local flood plain and it would appear my basement would be underwater should that happen - I would also pull the machines out of there.
I have both an iMac for when I’m at home in my office and a Macbook Pro for traveling or in other parts of the house or when I am working outside. I have a Drobo connected to it with 4x3Tb drives. I keep all my music, photos, and various other pieces of data there.
I have a linux server that I use to run various apps. I have a volume on the 1019+ mounted on the server via NFS that keeps my local git repository for my projects.
I have two Synology NAS drives, (414j and a brand new 1019+). The 414j had 4x2Tb drives and was getting full. The 1019+ has 4x8Tb drives and has lots of room.
I back up from my iMac to the 1019+. I’ve also moved services of the linux box to the 1019+ like Plex.
I have a daily job that backs up pictures etc from the 1019+ to the 414j done by Synology’s HyperBackup and HyperBackup Vault packages. Very easy to configure.
I’ve also just started trying out using HyperBackup’s ability to backup to a cloud system, specifically Google Drive. Again, very easy to configure. I haven’t started backing up pictures because I’m just using my free storage for now.
So, I’m still vulnerable to losing data if my house burned down or flooded suddenly (drives are on a high shelf though in the basement). But internally, I would need to lose 6 drives across three different machines simultaneously to lose data. I’m not sure there’s a RAID number for that
As for ease of use, Drobo and Synology were both very easy to use. I’ve had Synology since 2011 (a DS411j that I just retired) or so and the Drobo since 2017. I like the Synology drives and have configured them to email me if anything goes wrong with the backups, the hardware, or whenever they think they have an issue. In all of those years, I’ve only had two drives fail. One in the Synology and one in the Drobo. Just pulled the failing drive out, replaced it, and everything kept going.
As far as the original poster’s question it sounds like the current cloud solution being used would be fine. I’m a techy and enjoy exploring and building a well-oiled machine.