VMware Network I/O Control (NIOC)

  • 2014年10月10日
  • 0回答
  • 467的浏览量
joshodgers
排名
Userlevel 1
徽章 + 11
网络I/O控制是vSphere 4.1中带有虚拟分布式交换机(VDS)的一个可用特性，VDS使用网络资源池来决定不同网络流量类型所提供的带宽。
启用网络I/O控制后，分布式交换机的流量将被划分为“客户网络资源池”和/或预定义的网络资源池:容错流量、iSCSI流量、vMotion流量、管理流量、VR (vSphere Replication)流量、NFS流量和虚拟机流量。

从vSphere 5.0开始，您还可以为虚拟机流量创建自定义网络资源池。通过设置每个网络资源池的物理适配器共享和主机限制，可以控制每个网络资源池的带宽。

分配给网络资源池的物理适配器共享决定了在发生争用时，与该网络资源池相关联的流量将得到总可用带宽的多少份额的保证。

关于网络I/O控制(NIOC)，需要了解的一件重要事情是，除非存在争用，否则它不会对网络流量产生影响。因此，在网络利用率低于100%的情况下，NIOC没有任何优势或劣势。

网络资源池可用的传输带宽份额由网络资源池的份额和其他网络资源池正在主动传输的份额决定。

如果需要，主机限制可以应用于选定的流量类型，但是Nutanix建议不要设置限制，因为当有可用带宽时，这可能不必要地限制给定工作负载的性能。使用共享可以确保突发的工作负载，如vMotion可以在带宽可用的情况下尽可能快地完成它们的工作负载(在本例中是将一个虚拟机迁移到另一个ESXi主机)，而NIOC共享将防止在可用带宽有限的情况下其他工作负载受到显著影响。

下表显示了在Nutanix环境中为NIOC (Network I/O Control)推荐的网络资源池共享值。



更多信息，请参见技术说明VMware vSphere Networking on Nutanix
Josh岁
    \nWhen network I\/O control is enabled, distributed switch traffic is divided into Customer Network Resource pools and\/or the following predefined network resource pools: Fault Tolerance traffic, iSCSI traffic, vMotion traffic, management traffic, vSphere Replication (VR) traffic, NFS traffic, and virtual machine traffic.
    \n
    \nFrom vSphere 5.0 onwards, you can also create custom network resource pools for virtual machine traffic. You can control the bandwidth each network resource pool is given by setting the physical adapter shares and host limit for each network resource pool.
    \n
    \nThe physical adapter shares assigned to a network resource pool determine what share of the total available bandwidth will be guaranteed to the traffic associated with that network resource pool in the event of contention.
    \n
    \nA important thing to understand about Network I\/O control (NIOC) is it has no impact on the network traffic unless there is contention. So during times where the network is less than 100% utilized, NIOC has no advantage or disadvantage.
    \n
    \nThe share of transmit bandwidth available to a network resource pool is determined by the network resource pool's shares and what other network resource pools are actively transmitting.
    \n
    \nHost Limits can be applied to selected traffic types if required, however Nutanix recommends not to set limits as this may unnecessarily limit performance for given workloads when there is available bandwidth. Using shares ensures burst workloads such as vMotion can complete their workload (in this example the migration of a VM to a different ESXi host) as fast as possible where bandwidth is available, and NIOC shares will prevent other workloads being significantly impacted in the event available bandwidth is limited.
    \n
    \nThe following table shows the recommended Network Resource Pool Share values recommended for Network I\/O Control (NIOC) in a Nutanix environment.
    \n
    \n

    <\/a><\/p>
    \n
    \nFor more information, see the Tech Note VMware vSphere Networking on Nutanix","quoteUsername":"joshodgers","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

    0回答

    做第一个回复的人!

    回复


    Baidu