The first principle of a modularity framework is to attempt to try to focus on one logical piece of functionality at a time, also known as abstraction.
一个模块化框架的第一个基本原理是，努力尝试在一个时间关注于一个逻辑功能块，也称作为抽象。
Virtual abstraction is employed so that servers and storage can be managed as logical rather than individual physical entities.
虚拟抽象被运用到服务器和存储，这样可以进行逻辑管理，而不是一个个的物理实体。
At its simplest, it is an abstraction of the server's physical resources (CPU, memory, storage) from the logical resources presented to consumers.
简单地说，是将服务器物理资源(CPU、内存、存储)抽象成逻辑资源和呈现给用户。
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