vSphere与Hyper-V对比分析-en

Co m pa r i so n g u i d e / 1 Co m par is o n guide VMware vSphere 5 Features and Benefits Compared to Microsoft Hyper-V R2 SP1, Citrix XenServer 5.6 SP2 and Red Hat Enterprise Virtualization 2.2 VMware vSphere The best platform for building cloud infrastructures VMware vSphere 5 Key Features and Benefits Comparison KEY FEATURES AND BENEFITSVSPHERE 5 ENTERPRISE PLUS WINDOWS SERVER 2008 MICROSOFT HYPER-V R2 SP1 CITRIX XENSERVER 5.6 SP2RED HAT ENTERPRISE VIRTUALIZATION 2.2 Infrastructure Services: Virtualize and Aggregate Hardware Resources VMware vSphere infrastructure services transform discrete hardware resources into a shared mainframe-like computing platform that is incredibly resilient and capable of running the most demanding applications with near-native performance. VMware Compute: Infrastructure services that efficiently virtualize server resources and aggregate them into logical pools that can precisely be allocated to applications. VMware ESXi - virtualize server resources comprehensively Bare-metal architecture VMware ESXi inserts a robust virtualization layer directly on the server hardware for near-native virtual machine performance, reliability and scalability. 3 Yes, but Hyper-V requires Windows Server 2008. The stand-alone Hyper-V Server R2 requires a large portion of Windows Server 2008 Yes, but XenServer requires a Linux OS in the Domain 0 management partition No, RHEV requires a Red Hat Enterprise Linux host OS Small footprint. VMware ESXi is a compact, 144MB hypervisor. It is a fraction of the size of a general purpose operating system for unparalleled security and reliability. 3 No Microsoft Hyper-V R2 SP1 with Server Core has a 3.6 GB footprint No XenServer 5.6 including its Linux Dom 0 has a 1GB disk footprint 3 RHEV Hypervisor excludes some Linux OS components Server integration. VMware ESXi is available integrated into servers from leading OEM vendors for a simplified boot and deployment experience. 3 Partial, OEM vendors can preinstall Windows Server 2008, but additional configuration needed to enable Hyper-V role NoNo Efficient resource virtualization 3 Yes, basicYes, basicYes, basic 1 VMware vCenter Server is an essential requirement for management of VMware vSphere environments and is separately purchased. VMware vSphere leverages the power of virtualization to transform datacenters into dramatically simplified cloud computing infrastructures and enables IT organizations to deliver the next generation of flexible and reliable IT services, using internal and external resources, securely and with low risk. VMware vSphere comprises the following groups of components: Infrastructure services The set of components that comprehensively virtualize server, storage and network resources, aggregate them and allocate them precisely on demand to applications based on business priority. Application services The set of components that provide built-in service level controls to all applications running on VMware vSphere, regardless of application type or operating system. Administration of infrastructure and application services and automation of day-to-day operational tasks with deep visibility into every aspect of large and small VMware vSphere environments is provided by VMware vCenter1 Server. Key Features and Benefits Comparison to Competing Virtualization Products VMware vSphere features and benefits, including many new innovations, put it far ahead of competing products from Microsoft, Citrix and Red Hat. NOTE: Microsoft capabilities are based on features of Hyper-V R2 SP1 as managed by System Center Virtual Machine Manager 2008 R2. Citrix capabilities are based on XenServer 5.6 SP2. Certain Citrix features require extra cost editions of XenServer. Red Hat capabilities are based on Red Hat Enterprise Virtualization 2.2. CO M PAR I S O N GUIDE VMware vSphere 5 Key Features and Benefits Comparison Co m pa r i so n g u i d e / 2 KEY FEATURES AND BENEFITSVSPHERE 5 ENTERPRISE PLUS WINDOWS SERVER 2008 MICROSOFT HYPER-V R2 SP1 CITRIX XENSERVER 5.6 SP2RED HAT ENTERPRISE VIRTUALIZATION 2.2 CPU virtualization. Run many operating systems and applications encapsulated inside virtual machines on a single physical server for higher utilization, without risking critical processes being starved of compute or memory resources. VMware ESXi uses intelligent process scheduling and load balancing across available processors to manage the execution of virtual machine processing 3 YesYesYes User-configurable Number of Virtual CPUs per Virtual Socket. GUI based configuration of virtual machines to have multiple virtual CPUs reside in a single virtual socket, with each virtual CPU appearing to the guest operating system as a single core. 3 Fixed ratiosNoYes Advanced memory management 3 PartialNo No RAM over-commitment. Increase memory utilization by configuring virtual machine memory that safely exceeds the physical server memory. For example, the sum of the memory of all virtual machines runni