My brother was the MIS guy at a medium sized corp.
For years he carried a briefcase home with a back up cartridge, that was uploaded into a duplicate system at his house.
Each key exec had a part of the system at home. They had practice drills to reassemble a working system.
To cover for a physical event on the main office.
He says, companies that lose their data disappear.
We once experienced a hardware failure that resulted in the destruction of some data. Fortunately the backups were able to restore nearly everything. Of course this was a private company where people were held accountable.