从客户/服务器模式转移到云计算，带来了IT专业技能上的变化。IT工作人员需要学习新的技能。
With the paradigm shift from client server model to the cloud computing model, IT workers will need new sets of skills.
现代的硬盘，尤其是服务器所使用的更加专业的型号有着潜在超过十年的寿命，并且从整体上来讲，这种硬盘相当有差可恢复性。
Modern hard drives, especially the more specialised models used in servers, are quite resilient on the whole, with lifetimes potentially spanning over a decade.
比如，一个应用程序可能会允许一组专业用户向应用服务器上传数据文件。
For example, an application might have a group of expert users that may be allowed to upload data files to the application server.
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