Hyper-V

xuming on January 20th, 2010

RHEL 5.4 正式将 KVM 应用到生产,彻底摈弃了以往的 RHEL 5.0 版本中的 Xen。让我们看看 RHEL 5.4 中的 KVM 都支持哪些功能,支持 live migration (在线迁移),load balancing (负载均衡),snapshots (快照),flexible storage (灵活存储),memory page sharing (内存共享)和 ballooning, SSL encryption, multiple virtual CPUs 等等。以上这些功能都是服务器虚拟化方面的功能,RHEL 5.4 还具有针对桌面虚拟化的功能,使用 SPICE 协议,支持 rapid provisioning (快速部署),linked images,desktop pooling 以及 search-based 管理等功能,看来用户在 Citrix 的 XenDesktop 和 VMware View 之外又有了一种新的选择。 呃,这些功能还不够你兴奋的吗,看来 Red Hat 真是厚积薄发啊?看好 [...]

Continue reading about It’s time to give KVM and SPICE a try

xuming on December 23rd, 2009

As we all know that there are different tools, e.g. Hyper-V Manager, Virtual Machine Manager and System Center Operations Manager (SCOM), you will need to manage the Hyper-V environment and soon you will find out these three tools are sold separately but not sold as a bundle. Below are excerpts from the whitepaper of A [...]

Continue reading about The Diff between vSphere and Hyper-V (excerpt)

xuming on December 23rd, 2009

It’s has been universally acknowledged that managing how to share CPU, memory, storage and network resources is the key to avoiding performance problems in any virtualization environment. This paper cover some lessons learned in years of experience managing capacity resources in a VMware environment and how those same techniques can be applied to a Hyper-V [...]

Continue reading about A VMware Administrator’s Guide to Hyper-V

admin on October 14th, 2009

习惯了使用 VMware 的产品,在测试 Hyper-V 的时候发现很多不同的地方,先总结一下,主要从 Hyper-V R2 角度考虑。 ##### # 缺点 ############################# 1. 网络配置太简单,几乎没有什么可选; 2. 但是在配置 virtual networks 又发现很容易搞混网卡之间的对应关系; 3. 配置复杂,如果要实现 Live Migration 功能,会发现有太多的东西需要配置; 4. 管理分散,需要不断的在 Host 上的 Hyper-V Manager,Failover Cluster Manager 和 SCVMM 2008 R2 Console 之间切换; 5. 补丁管理问题,如果每月一次的重启会是梦魇; ##### # 优点 ############################# 1. 有个 save state 功能,会自动在 Host 重启之前保存 VM 状态,然后在重启后自动恢复。如果是 Host 关机,则现在启动后 [...]

Continue reading about Hyper-V R2 和 vSphere 个人使用感受