There are so many things we are afraid of - disease, accidents, old age, natural disasters - that we are almost used to having this undercurrent of dread in our lives.

世界上有太多我们害怕的事情——疾病，事故，年纪渐老，自然灾害——这些事情会合成了一股暗流，让我们一生都在担心害怕。

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Physical servers are vulnerable and there are many things that can happen to harm them (including but not limited to environmental issues and natural disasters).

FORBES: Cloud Computing and Mobile Processing Saves Small Business