Wu's Blog

Tag: ucs

  • vRealize Operations Manager 6之Cisco UCS性能监控组件介绍

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    思科UCS刀片系列是我至今用过最好的刀片系统。无论是硬件、软件还是技术支持都堪称完美。个人推荐在大型虚拟化机房里把思科UCS作为主要设备。思科UCS刀片系统的架构和惠普的完全不同，感觉更像是个网络设备。Fabric Interconnect (FI)模块负责上联口和内部各组件之间的数据交换、IOM负责各刀箱数据路由。架构看起来很复杂，但是在管理大型数据中心时非常强大。说到大型数据中心，比如有 上百个刀箱和刀片服务器，数据要经过FI、IOM、刀片等，问题可能发生在任何层面，大型虚拟化数据中心很难找到问题的根源。UCS Manager有提供类似思科网络交换机一样的计数器功能，可以显示每一个端口的计数情况，但是这个监控工具不会告诉你什么时间、在哪个层面发生了问题 。在测试NetApp存储性能监控组件之前我有幸测试了vRealize Operations Manager 6的Cisco UCS性能监控组件。该组建同样由Blue Medora开发。以下简单介绍一下，只是我的个人观点 。

  • Unexpected Failover on UCS Manager After Upgrade Firmware Version to 2.2.x

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    I noticed UCS Manager got unexpected failover after we upgraded firmware to 2.2(2c). Looks like it hits a bug CSCuo11700. Firmware should be upgraded to 2.2.(3a) to fix the issue.

  • FC Traffic Drops After IOM Reset/Reseat/Cable Pull or UCS Upgrade

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    I just found a Cisco KB descripts a firmware issue may impact to ESXi FC storage performance. Please have a look whether your Cisco UCS system firmware is 2.1(2a), 2.1(2c), or 2.1(2d).

  • PortChannel does not work on Cisco UCS Fabric Interconnect

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    Whatever  you configure on MDS, whatever you configure on Cisco UCS FIs, whatever you do for port channel on both side, the Cisco UCS uplink ports always down with error message Initilize failed, or Error disabled. Congratulation! your device hit MDS firmware bug…https://tools.cisco.com/bugsearch/bug/CSCtr01652/?reffering_site=dumpcr.  

  • vHBAs and other PCI devices may stop responding in ESXi 5.x when using Interrupt Remapping

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    Your vHBAs or other PCI devices may stop running in ESXi 5.x when using Interrupt Remapping feature. This issue only impact to UCS blade BIOS version 1.4(3c), it has been fixed on 1.4(3j). Please refer to http://kb.vmware.com/kb/1030265 to see how to disable Interrupt Remapping feature in ESXi 5.x Also refer to https://tools.cisco.com/bugsearch/bug/CSCty96722.