Task:Telecom Localization Translation,Edit and Proofreading.
Selcted Source Language：EnglishSUFFICIENT Bandwidth = A GOOD USER EXPERIENCE
In addition to bandwidth-intensive technologies such as vMotion and Live Migration, several newer technologies are driving the need for more and more network bandwidth. Virtual desktop has now evolved to allow high-end graphics processing units (GPUs) to send high-resolution, lossless videos and graphics from a server in the data center to multiple client devices over the LAN. These application and videos maintain their high quality only when bandwidth is sufficient. Otherwise, quality degrades during the data transfer process, and the user experience deteriorates. Newer and faster storage arrays now incorporate solid-state drives (SSDs); this means that the server has greater access to disk I/O via network-attached storage (NAS) but can only benefit from the NAS if the network link supports the transfer of data. Companies must be able to maintain high levels of service as bandwidth needs increase over time. To achieve this in a cost-effective way, they need to plan their purchases with an eye to future growth and to understand the costs associated with scaling up.
To understand the impact of the pay-as-you-go approach to increasing bandwidth, we considered a hypothetical business environment requiring 80 compute nodes. The company is looking to start with a baseline configuration that provides 20 Gbps of upstream bandwidth to any single node, and intends to increase bandwidth in later configurations. We considered two solutions: [Company1 System1] and [Company2 System2]. To minimize additional hardware purchases when moving to the next tier of bandwidth, we selected blade components for the 20Gbps tier that provided the most flexibility for moving to higher tiers. We used MSRP prices obtained from the [Company1] and [Company2] Web sites and configuration tools, as of September 30, 2013. As Figure 1 shows, when starting with the base configuration of 20 Gbps per compute node for both solutions, moving to greater levels of bandwidth—40 Gbps and 80 Gbps—is considerably less costly with [Company1 System1].
Selceted Target Language:Chinese 充足的带宽 = 良好的用户体验
除 vMotion 和 Live Migration（实时迁移）等带宽密集型技术外，还有多项新技术也在驱动着针对更大带宽的需求。如今，虚拟桌面已演变为允许高端图形处理单元 (GPU) 通过 LAN 将高清、无损视频和图形从数据中心内的服务器发送到多个客户端设备。要确保这些应用和视频的高质量，充足的带宽便必不可少。否则，数据质量便会在数据传输过程中降低，用户体验也会随之下降。目前较新、较快的存储阵列会采用固态硬盘 (SSD)，这意味着服务器可以通过网络附加存储 (NAS) 获得更大的磁盘 I/O，但只有在网络链路支持数据传输时才能从中获益。随着带宽需求的不断提升，企业必须具备维持高水平服务的能力。要达成此目标同时尽可能降低成本，企业在规划其采购时便需充分着眼于未来的发展态势，同时了解与扩展相关的成本支出。
为探究现收现付方案对不断增大的带宽的影响，我们假想出一个需 80 个计算机节点的虚构业务环境。在此环境下，企业计划先期采用可向任意单节点提供 20 Gbps 上行带宽的基线配置，继而在后续配置中扩大带宽。为此，我们考虑了两项解决方案：[Company1 System1] 和 [Company2 System2]。为尽可能降低步入下一带宽级别时的额外硬件采购量，我们为 20 Gbps 的带宽级别选择了刀片服务器组件，以此确保在扩展至更高带宽级别时实现最大灵活度。我们采用截止 2013 年 9 月 30 日从 [Company1] 和 [Company2] 网站和配置工具中获取的 MSRP 价格。如图 1 所示，如果两种解决方案都从每计算节点 20 Gbps 的基本配置开始，在升级到更高的带宽等级（40 Gbps 或 80 Gbps）时，[Company1 System1] 所需的成本要低得多。
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