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大数据分析 R语言实现_23.docx - Chapte r1 The answer is not very...

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The answer is not very straightforward, and the exact number is not set in stone. To give anapproximate estimate we first need to differentiate between simply storing the data, and processing oranalyzing the data. If your goal was to preserve 1,00() YouTube videos on a hard drive, it most likelywouldn't be a very demanding task. Data storage is relatively inexpensive nowadays, and new rapidlyemerging technologies bring its prices down almost as you read this book. It is amazing just to thinkthat only 20 years ago, $300 would merely buy you a 2GB hard drive for your personal computer, but10 years later the same amount would suffice to purchase a hard drive with a 200 times greatercapacity. As of December 2015, having a budget of $300 can easily afford you a 1TB SATA IIIinternal solidstate drive: a fast and reliable hard drive, one of the best of its type currently available topersonal users. Obviously, you can go for cheaper and more traditional hard disks in order to store
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