In a era of commodity server hardware and zero license-cost software, it can often be more effective to scale an application across many machines rather than on ever-larger servers.
在这个使用普通服务器硬件和零许可证成本软件的年代，可伸缩性常常使我们能够更有效地将应用程序扩展到更多的机器，而不是像以前升级为更庞大的服务器。
Turning customisation into a commodity served Dell exceptionally well, and not just in the PC market: it successfully used the same approach with server computers, printers and storage devices.
把定制化变成商品对戴尔特别有用，不仅仅是在个人电脑市场。它也成功的在服务器、打印机以及存储器上运用这个策略。
Horizontal scalability, on the other hand doesn't require you to buy more and more expensive servers. Its meant to be scaled using commodity storage and server solutions.
另一方面，横向扩展并不要求你购买更多昂贵的服务器，这意味着应用普通的存储和服务器作为解决方案。
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