标签：xen
1、IT资产虚拟化正迅速成为大多数企业的标准解决方案；
2、Citrix XenServer是一套已经在云计算环境中经过验证免费的企业级开放式服务器虚拟化解决方案；
3、XenServer可将静态、复杂的IT环境转变为更加动态、易于管理的虚拟数据中心，从而大大降低数据中心成本；同时，它可以提供先进的管理功能，实现虚拟数据中心的集成和自动化；
4、XenServer允许企业创建和管理数量无限的服务器和虚拟机，而且可以从同一管理控制台上安全运行。
5、XenServer基于Xen开源设计，是一种具有出色可靠性、可用性和安全性的虚拟化平台，能够提供与本地应用不相上下的性能和无与伦比的虚拟机密度。
ps: Xen 、XenServer及xcp的区别
（1）Xen ，XenServer以及xcp都是虚拟化的相关产品
（2）Xen仅仅是一个j简单的hypervisor；
（3）XenServer和xcp是一个 hypervisor +api+tools的套装；
（4）xcp是xen cloud platform的缩写
更精辟的解释：
http://community.spiceworks.com/topic/131849-xen-vs-xenserver-vs-xcp
Xen: The open source, completely free granddaddy of the Xen family (which at one time had many children, most of whom are now gone.) Xen is different from all of its competitors in that it is a hypervisor ONLY and not a virtualization ecosystem (no management console, no extra features, no nothing.) It’s just a tiny little hypervisor. This is confusing because we lump Xen with HyperV, for example, but it is not an apples to apples comparison. Xen is like the hypervisor inside HyperV that no one even knows the name of.
XenServer: The primary commercial virtualization suite built on technologies derived from Xen. XenServer is an “older” version of Xen with some features removed and other featurs hidden behind “add ons.” So XenServer is far less functional than Xen and is not completely free (it can be, but many features are not.) XenServer is a full suite with all of the nice console and tools, APIs, etc. Much more user friendly than Xen and requires no core OS knowledge to get it working unlike Xen that requires you to really know the Dom0 environment well.
XCP: Xen Cloud Platform. XCP is a full virtualization suite based on Xen. It uses real Xen and combines in all of the other components needed to be a full suite just like XenServer, vSphere and HyperV. It is open source and comes from the Xen people. Today, when people talk about Xen, they mostly talk about XCP as XCP is the apple to apple with the other products and not just the hypervisor. You lose no functionality going with XCP over Xen on its own but it is far easier. XCP is designed to be interoperable with most, if not all, APIs from XenServer so that they can share tools giving XCP a lot of important options.
6、利用Xen Server虚拟化平台可以降低基础架构投入、节省管理和能源成本；
7、主要特点：站点恢复、高可用性（虚拟机自动重启）、自动工作负载均衡、主机电源管理、生命周期管理、内存优化、置备服务、Citrix Storage Link、基于角色的管理
8、Citrix XenMotion，允许将运行的虚拟机迁移到新主机上，而不需要中断应用运行或停机，因此可以消除计划内停机；
9、Citrix XenConvert 能够加快物理和虚拟服务器的安装和迁移速度，帮助瞬间完成向XenServer的转换。作为一种p2V 或V2V工具，XenConvert可以将服务器或桌面工作负载转移到XenServer虚拟机上。
标签：xen
原文地址：http://blog.csdn.net/wan353694124/article/details/46128411
