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一、什么是虚拟机?
虚拟机是一类能够通过软件模拟其他系统行为,做到虚拟化、跨平台等目的的一类的软件。市面上有很多虚拟机产品,如VMware虚拟机、Java虚拟机,它们都有很好的虚拟化能力,我们可以在软件内
运行其他操作系统。
二、虚拟机的架构
虚拟机分为三个架构,分别是传统运行架构、寄居架构、原生架构,其中主要的就是寄居与原生架构,下面让我们来详细看看这三种架构。
1、传统运行架构:此架构一台计算机同时只能运行一个操作系统,也就是说不能同时开启多个虚拟机。
2、寄居架构:此架构可以在应用软件内安装多个操作系统进行操作(可以说是只要电脑配置够,可以安装无数个虚拟机)
①虚拟机作为应用软件安装在操作系统上。
②直接安装在硬件上的系统为宿主系统。
3、原生架构:相比上两种,原生架构就很强大了,它也是可以运行多个操作系统的
①虚拟机软件直接安装在计算机硬件上。
②虚拟机本身就是一个操作系统。
寄居架构一般用于个人,而原生架构一般用于企业。
三、虚拟机的三种网络模式
1、桥接模式:宿主机和虚拟机处于一个网段,虚拟主机和本机处于同等地位,是局域网里的一台独立主机。
2、NET:虚拟机只能通过宿主机来访问外网,我们在上网时,用的也是宿主机的IP。
3、主机模式:主机模式中,虚拟机和宿主机完全隔离得。
四、虚拟机产品
①VMware(威睿公司)
产品:VMware Workstation(寄居架构)VMware vAphere(原生架构)
②Micro Soft(微软公司)
产品:Virtual PC、Virtual Server、Hyper-V