alt Hacker NewsThat's only true if your typical loss event loses one record. If you have a one in a million chance of an array failure taking out 10% of your production database, and otherwise have zero possibility of data loss, you also get 10^-7 losses per record.
And I wouldn't assume they meant that number to be per record in the first place.
I don't think anyone in history has ever achieved a true 10^-7 annual probability of any data loss incident. So they must have been making some kind of per record or per operation claim.