Depends on the business. Some businesses — like the health care sector — are required to keep redundant records on every little thing here in the US because of endless lawsuits, valid or not. Many others, however, just spray way too much email around, wasting a lot of time.
I spend a significant part of each week archiving data from my HD onto other media. It's like cleaning the kitchen or bathroom: I just do it while I'm watching a sports game in the background.