I wonder how this process worked in practice. Do you simply send your only one set of hard disks and hope for the best? Do you keep your original data on one set of disks, copy it to another set of disks and send it off? Do you make multiple copies of the same data and send them all together on the same truck? Multiple copies on multiple trucks? How would you do reconciliation on the other end once the disks arrive at the destination?

Like everything feels so simple and straightforward from afar but once I try to actually reason about something even the simplest of tasks feels complicated.