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虚拟化技术分四大类 你都学会了吗?

2018-2-18 23:44| 投稿: xiaotiger |来自: 互联网

摘要: 虚拟化技术在企业级早已有之,但是随着云计算的快速发展,近三到五年间,虚拟化可以说迎来了第二春。一方面容器、云计算技术让虚拟化有边缘化的风险,无数专家鼓吹容器和云的关键作用,另一方面,虚拟化作为拥有几十 ...

虚拟化技术在企业级早已有之,但是随着云计算的快速发展,近三到五年间,虚拟化可以说迎来了第二春。一方面容器、云计算技术让虚拟化有边缘化的风险,无数专家鼓吹容器和云的关键作用,另一方面,虚拟化作为拥有几十年历史的企业级关键技术,长盛不衰。

今天我们就来看看虚拟化怎么分类的?首先需要说明的是,虚拟化能够最大程度利用资源,为企业节约成本。目前市面较受欢迎的虚拟架构主要有KVM、XEN和VMware三大类别。其中,KVM和XEN都是免费开源的,而VMware则是付费的。

虚拟化技术拓扑

从另一个维度来看,虚拟化可以分为四大类:内存虚拟化、网络虚拟化、服务器虚拟化、存储虚拟化。

利用服务器虚拟化,我们可以将服务器的CPU、内存、磁盘等硬件集中管理,通过集中式的动态按需分配,可以提供资源的利用率;

内存虚拟化是指利用虚拟化技术实现计算机内存系统对内存的管理;现在的内存驱动在关键业务领域也掀起了一股新的风尚;

存储虚拟化现在被提及的很多,主要思想是将存储资源进行逻辑视图和物理存储分离,从而为系统提供无缝的资源管理;

网络虚拟化是利用软件从物理网络元素中分离网络力量的一种方式,网络虚拟化与其他形式的虚拟化有很多共同之处。网络虚拟化也面临着技术挑战,网络设备和服务器不同,他一般需要执行高I/O任务,对于数据处理往往以来专有的硬件模块。

笔者认为,容器技术如今还在发展进化中,可能存在一定的不稳定因素。相比之下上面提到的虚拟化技术已经经历了时间的检验,能够帮助企业实现数字化转型,实现降低TCO,提高效率的效果。

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