文件名称：整合提高了硬件的使用效率-VMware虚拟化解决方案
文件大小：5.97MB
文件格式：PPT
更新时间：2024-05-12 13:35:54
VMware
整合提高了硬件的使用效率 使用VMware之前 实施VMware之后 虚拟化使得低利用率的服务器负载进行整合到一台服务器，同时安全可靠地达到很高的硬件利用率 One of the clearest benefits ESX Server users see after consolidating servers into virtual machines is a huge improvement in server utilization as measured by average CPU usage. IT administrators generally dedicate a single x86 server per application because of issues like application compatibility problems when running on a single OS image, software vendor requirements or internal billing constraints. The result of that “one application, one server” practice is a datacenter filled to capacity with servers running at 5-15% utilization. With multiple servers consolidated on an ESX Server host, customers are able to reliably operate their servers at 60-80% CPU utilization – a huge improvement in the return on investment in their server hardware. This higher CPU utilization is possible only with the intelligent CPU resource controls made possible by the bare-metal architecture of ESX Server. Normally, running a server at high CPU utilization creates the risk of a critical service being starved for CPU if others experience a load peak. ESX Server eliminates that risk with its CPU resource controls that assign CPU capacity to virtual machines on a “fair share” basis and it also allows an absolute minimum level of CPU capacity to be allocated to critical virtual machines. CPU allocations can also be dynamically adjusted so you can “dial in” more capacity for a virtual machine in anticipation of a period of high load. ESX Server will enforce admission controls to prevent additional virtual machines from being started on a host if minimum resource guarantees for existing virtual machines could not be assured. Running your servers at higher utilization really changes datacenter economics. Now it becomes justifiable to invest in higher end server features like redundant power supplies, hot swappable components, dual storage adapters and teamed NICs when you can divide the cost of those features across multiple servers running in virtual machines rather than across just one application running on a single OS image. That’s important if you’re worried about putting all your eggs in one basket with virtual machine server consolidation – you can now afford more reliable servers and also feel confident in the rock-solid proven reliability of the ESX Server platform.