Personally, I would define that to mean: the most reliable, most available second copy created in the least amount of time. "Best" translates to getting the most protection for the least amount of expense. To safely hold copies of your archives, what will you copy your files to which kind of device is best. In addition to having to deal with the tedium typically involved with creating data preservation backups on an ongoing basis, there is the further dilemma as to which type of data storage medium to use. Having a current backup (BU) is indeed very much like having a health insurance policy. As all of your bodily health is in your body, all of your data is in that hard drive. What you have is analogous to the condition of your computer when your hard drive (HD) goes belly up.
Now, think about driving down the road at fifty miles an hour, getting a fly in your eye, and slamming into an oak tree. To connect with this analogy in terms of your information system, think of your computer as an automobile, and your data as the body of its driver.
Except that backups can take a lot more of your time - even if you have to write checks to pay bills - implementing business continuity (BC) plans are otherwise a lot like paying your health insurance premiums: paying them does virtually nothing to keep you healthy, but it certainly saves the day after you find yourself in the back of an ambulance. No joke about it, backing up your data is not fun. Media Choices for Business Continuity Strategies
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