OneDrive is horrible for backup because it doesn't keep any history of your files. Get a Ransomware on your computer, then watch in horror how your files are gone and how totally useless OneDrive can be.
This is why I prefer Dropbox. They keep 30-days worth of history so you can revert any file changes during that period. And I prefer to pay extra for the Extended History add-on, giving me 1 year worth of history. They aren't alone in doing this. SpiderOak also keeps the history of all changes from what I understand and they also do encryption. And Google Drive keeps history for 30 days, but they don't have an add-on. Note though that Google Photos can be downloaded by means of Google Drive ;-)
I did try OneDrive with a trial Office365 subscription, but I think at this point OneDrive is the worst option out of the mainstream ones. Besides the lack of version history, it also lacks a Linux client. One thing I do is to have a home machine that I keep turned on for having an extra backup, being synchronized with Dropbox. It also serves as a media box, but it's a Linux box, because Linux is the best option for servers, including home ones.
And it's not as cost effective as you'd think. If you look at Office alternatives and considering the OneDrive features you get, it's quite overpriced.
Check again because it does not have version history. It only does it for "Office documents". This has been one of the long requested features that's still unaddressed.
On Dropbox losing files, never had problems, but I believe you. All software is terrible.
I had once lost Dropbox files, but only because I deleted a folder on my local Dropbox folder and assumed it won't sync that 'deletion' to the cloud. My intention was to sync only some selected folders locally and let the rest be online. Also, I came to know about it later than 30 days as well - which is the time they keep backup of deleted stuff for.
This is why I prefer Dropbox. They keep 30-days worth of history so you can revert any file changes during that period. And I prefer to pay extra for the Extended History add-on, giving me 1 year worth of history. They aren't alone in doing this. SpiderOak also keeps the history of all changes from what I understand and they also do encryption. And Google Drive keeps history for 30 days, but they don't have an add-on. Note though that Google Photos can be downloaded by means of Google Drive ;-)
I did try OneDrive with a trial Office365 subscription, but I think at this point OneDrive is the worst option out of the mainstream ones. Besides the lack of version history, it also lacks a Linux client. One thing I do is to have a home machine that I keep turned on for having an extra backup, being synchronized with Dropbox. It also serves as a media box, but it's a Linux box, because Linux is the best option for servers, including home ones.
And it's not as cost effective as you'd think. If you look at Office alternatives and considering the OneDrive features you get, it's quite overpriced.