Emulex OneConnect OCe10102 on ESXi 6.0

Please refer to following post for basic troubleshooting of Emulex OneConnect. How to Install Proper Drivers for 3rd Party Network Adapter on ESXi 5.x I have a box uses Emulex OneConnect OCe10102 network adapters. The adapter is quite old and Emulex brand card doesn’t support ESXi 6.0. I upgraded the server to ESXi 6.0 and […]

Troubleshooting Network Performance of Virtual Machine

There are several layers of networking on the virtualization infrastructure. Guest operating system, Virtual Machine, ESXi driver, physical network adapters, RJ45/SFP and network switches…etc. Sometimes it’s hard to say where exactly caused a problem. Especially hardware layer problems. Today I worked on a very interesting case, it may give some ideas to troubleshooting network performance […]

vRealize Operation Manager Installation Pending on install.sh

If your company implemented firewall and blocked public NTP server, you may see installation of vRealize Operation Manager pending on ./install.sh on console. That’s because the installer tries to negotiate with NTP server www.iana.org. The firewall blocked the traffic. VMware TAM Manager Shan told me  there are two options on firewall to block traffic: REJECT […]

Receive Side Scaling on UCS Blades

To implement enterprise application like SAP, Oracle or SQL on UCS virtualization environment. Default setting of UCS blades may not suitable for the application. We always expect highest performance by optimize hardware and ESXi. In my UCS training session, I noticed one “hidden” parameter may helpful for performance. Receive Side Scaling – So called RSS, […]