I used to use a seagate external 1TB mirrored drive for backups.
Then some disgruntled employee at seagate pushed out a firmware update. Turned it into a brick.
No solution is perfect and the cloud is very good at some things. These tools back files up as you make changes to them and don’t require you to do anything.
I have one of those seagate backup drives and it is stuck telling me my backup has failed. What a POS. I have to look for one that is infallible.