A tragic incident of fire has caused a lot of damage at the Mantralaya in Mumbai. Lives have been lost and a number of people have been injured in the fire. There is report (http://news.in.msn.com/exclusives/it/article.aspx?cp-documentid=250206858#page=1) that more than 90% of nearly 500 computers have been destroyed by the fire. Loss of data is the worst impact of such incidents, because the hardware and software can be bought and replaced, but not the data. On the other hand, there was a problem at RBI, Kolkata, because of which a PC with vital data got badly damaged beyond repair. There within less than 1/2 hour, the data of that PC was restored from the latest backups. Contrast the two cases — in one place most data is lost vs. lost data is quickly recovered.