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解决了

MS SQL簇 - 多个SCSI控制器

  • 2016年10月12日
  • 7个答复
  • 1541次观看

徽章 +4
嗨,我是我在Server 2012R2上创建一些MSCS SQL群集的过程。在适用的文档中,与Nutanix一起使用基于ISCSI的VG。另请阅读Mike Websters在即将发布的软件版本中与这些VG相关的HOT扩展与这些VG相关的磁盘的信息,真的很好!我的问题是关于我如何在当前多个VMware P/V SCSI控制器上破坏I/O。如果我遵循说明

https://portal.nutanix.com/#/page/solutions/details?targetID=BP-2049_ACROPOLIS_BLOCK_SEVICES:BP-2049_ACRAPOLIS_BLOCK_SERVICES

该VM的所有I/O都不会浏览默认值和SCSI控制器吗?我正在尝试通过多个SCSI控制器分发I/O用于日志,tempdb等。它在我们利用RDM的环境中运行良好,并想尝试在Nutanix方面重复此操作。您能告诉我这是否是可行的,也是实现它的最佳方法。
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最好的答案mmcghee2016年10月12日,21:32

\n
\nWhen using iSCSI, storage traffic will go through the vNICs you have configured for the VM. From a performance perspective there are some cases where having muliple vNICs can help, like when CPU utilization is high due to a lot of IOPs. Multiple vNICs can help to balance the network operations across multiple cores. Enabling RSS helps with this but multiple vNICs can also have a benefit. If you have concerns you could add another vNIC and then balance the iSCSI sessions across the two.
\n
\nHTH,
\nMike","className":"post__content__best_answer"}">
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7个答复

UserLevel 3
徽章 +17
嗨,亚当,

使用ISCSI时,存储流量将通过您为VM配置的VNIC进行。从性能的角度来看,在某些情况下,拥有Muliple VNIC可以提供帮助,例如由于很多IOPS,CPU利用率高。多个VNIC可以帮助平衡跨多个内核的网络操作。启用RSS可以帮助您,但是多个VNIC也可以带来好处。如果您有疑问,则可以添加另一个VNIC,然后在两者中平衡ISCSI会议。

hth,
麦克风
Userlevel 1
徽章 +9
您是将卷组呈现给整个VMware群集,然后从中创建数据存储,还是直接将ABS卷组呈现给虚拟SQL节点?要复制与RDMS一起使用的IO分离,您需要使用该选项,以在VMware群集上创建数据存储。这将使您可以分配多个PVSCSI控制器,并将虚拟磁盘分配给VM,就像您习惯用于DBS,LOGS,TEMPDB等一样。请务必检查VMware KB2038869查看您的网络配置是否需要ISCSI端口绑定。如果您有针对ISCSI流量与其他网络的单独的VLAN,则需要端口绑定。对于主机级别的冗余,您需要在每个主机中添加两个VMKernel端口,然后将每个端口中的每个端口绑定到物理NIC。VMware KB2045040解释过程。

如果您直接从VMS绘制ISCSI,则所有ISCSI配置都在访客中。就像说的那样,所有IO都将通过NIC界面。根据您的IP/VLAN设置,您可能会使用NIC团队或MPIO。请参阅此Microsoft博客以获取更多信息这里。您很可能会使用MPIO。

无论哪种情况,Nutanix都使用AOS 4.7和使用“外部数据服务IP地址”使多路径变得非常容易。现在,您只需使用一个目标IP即可使用,Nutanix使用外部数据服务IP地址作为虚拟IP来自动管理ISCSI连接并在所有CVM上进行后端MPIO。

希望我离您的问题不远,并且此信息可以帮助您更接近您想要的内容。
徽章 +4
迈克(S) -
非常感谢您的回复,基本上,在我们的POC群集上,我正在调整两种配置,以查看我可以从可管理性的角度获得最佳性能以及最简单的内容。如果测试进展顺利(我预计会这样,请将SQL工作负载移至一些新节点)。你们俩都可以评论Nutanix发现的最佳位置,ISCSI映射到VMS,或者呈现卷组并创建数据存储。我看到两者的优点/缺点,好奇是否有人可以对两种方法的好/糟糕/丑陋发出声音。
Userlevel 1
徽章 +9
我的个人偏爱是使用数据存储在虚拟化层处保持存储分配的可见性,以监视工具,基于图像的备份和复制。
今年早些时候,我在访客(单个VNIC)和基于数据存储的配置中进行了一些比较,发现数据存储配置总是更快。我的测试不是非常科学的,但这是一致的。
UserLevel 3
徽章 +17
我可能会误解,但我认为目标是为在VM中运行的共享磁盘SQL/WSFC提供存储。我们支持的方法是将ISCSI直接用于带有ESXI的VM。您将无法使用数据存储器创建共享磁盘群集(在其中最好使用我们的标准NFS方法),并且我们今天不支持RDMS。
Userlevel 1
徽章 +9
感谢您将我们重新回到...工作的配置也是一个关键考虑因素
徽章 +4
是的,你是对的迈克,对不起,那里有一点漂移。实际上,我们同时进行WSFC和AGS,因此我将在适用的情况下探索这两个选项。感谢您的意见 - 非常感谢。
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