I can't answer for the author, but I can answer for myself.
First of all, I have a little bit of fault tolerance with using ZFS and ZRaid 2 with 6 disks - so I'm good until 2 disks have failed.
But more than that, everything is backed up offsite using Restic and the JottaCloud RClone backend - the data I don't want to lose is around 4TB (backups from all computers in the house, and SeaFile sync of all mobile devices) so whilst the initial upload wasn't super fast (although not too bad as I've got a 70Mbps upload speed) periodic sync each day is super quick.
First of all, I have a little bit of fault tolerance with using ZFS and ZRaid 2 with 6 disks - so I'm good until 2 disks have failed.
But more than that, everything is backed up offsite using Restic and the JottaCloud RClone backend - the data I don't want to lose is around 4TB (backups from all computers in the house, and SeaFile sync of all mobile devices) so whilst the initial upload wasn't super fast (although not too bad as I've got a 70Mbps upload speed) periodic sync each day is super quick.