云计算安全之名词解释 – compartmentalization
在第一版中头一次看到这个词，觉得很好玩，很好玩的英语后缀变化 – Compart, compartment, compartmentalize, compartmentalization。这个词在新版中应该出现了有5，6次。觉得好玩的同时，有点觉得他们在玩造词游戏。有几次在这边乘坐火车、看儿子接回来的图画词典时，才知道Compartment用的很多。下面是一本英汉词典里对compartment的解释：
compartment
n.[C]
1. 区划;划分;隔间
The dresser drawer was partitioned into four compartments.
梳妆台的抽屉隔成四小格。
2. (火车上的)小客房
There were ten compartments in each car of the train.
那辆火车每节车厢有十个小客房。
vt.
1. 分隔;划分
云计算的一个重要特征是“多租户”，每个“租户”都想火车乘客那样都有自己的一个隔间，很形象，对吗？
下面的Wiki字条还有一层更为恰当的含义：
系统之中的系统，保证各自的独立性，保证相互之间的防火要求和生命安全、财产保护、运行连续性，… 这就是Compartmentalization在云安全上的更为准确的含义了。
为方便墙后同学，将Wiki此条的内容转帖如下：
Compartmentalization in structures, such as land-based buildings, traffic tunnels, ships, aerospace vehicles, or submarines, is the fundamental basis and aim of passive fire protection.
The idea is to subdivide a structure into “fire compartments”, which may contain single or multiple rooms for the purpose of limiting the spread of fire, smoke and flue gases, in order to enable the three goals of fire protection:
* life safety
* property protection
* continuity of operations.
The construction of such compartments and all its components is a matter of systems within systems, which use Listing and approval use and compliance to achieve fire-resistance ratings, all interdependent, forming part of an overall fire safety plan. All components forming part of such a compartments are subject to stringent Listing and approval use and compliance in countries, where product certification is mandatory.
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