Google, as a company, is not reliable - I refuse to host anything critical on Google Drive (even G Suite) because there's zero recourse or accountability if a bug in Google's software or if Google arbitrarily decides to ban you for life from their services (e.g. due to misidentifying you from a dodgy YouTube user or repeated Google Play Store policy violations) then they will delete all of your personal and business accounts and you're SOL.
What you have is fine for short-term recovery - but I'd make sure you have a long-term and/or cold-storage option set up. It doesn't need to be anything particularly fancy: I'd get a rugged+ portable+external single-drive USB enclosure with a single 16TB drive and have the Synology do a backup of your most critical data onto that drive and store it in your bank's safety deposit box or better yet: leave it with a trusted friend who lives in rural Minnesota or similar.
It goes without saying to encrypt that drive as you won't have full custody of it: but use a simple, proven encryption scheme with a large ecosystem that you know that you'll be able to decrypt in 10-20 years' time.
For backup drives that I keep local to me, I refuse to encrypt them because (in my experience) the possibility of being unable to decrypt data in a desperate or urgent situation just makes me wince.
What you have is fine for short-term recovery - but I'd make sure you have a long-term and/or cold-storage option set up. It doesn't need to be anything particularly fancy: I'd get a rugged+ portable+external single-drive USB enclosure with a single 16TB drive and have the Synology do a backup of your most critical data onto that drive and store it in your bank's safety deposit box or better yet: leave it with a trusted friend who lives in rural Minnesota or similar.
It goes without saying to encrypt that drive as you won't have full custody of it: but use a simple, proven encryption scheme with a large ecosystem that you know that you'll be able to decrypt in 10-20 years' time.
For backup drives that I keep local to me, I refuse to encrypt them because (in my experience) the possibility of being unable to decrypt data in a desperate or urgent situation just makes me wince.