PC World writes: "A corrupted Outlook database trashes your e-mail archive and contact list. An accidentally deleted folder wipes out critical business documents. A sudden hard-drive failure destroys your MP3s and photo libraries. The list of potential catastrophes goes on and on, and few users are prepared to deal with them. That's because they lack a diversified backup plan.
From a certain point of view, data is a little like money. Financial advisors always recommend maintaining a diversified portfolio, the idea being that if one stock or mutual fund tanks, you won't go broke. The same concept applies to backups: By diversifying your approach--that is, archiving your data in multiple places using multiple methods--you're safe even if disaster strikes one location or collection of data.
Let's take a look at the ways you can expand your backup portfolio to protect against the inevitable data catastrophe. To ensure the safey of your important files, I recommend using at least a few of the following methods in unison."