The last and first week of the year I normally reserve for some jobs around the house, some time with wife and kid and some studying. This time the VCP5 exam was the goal. I combined this with the update of my vSphere4 administration and advanced administration course I give for Ictivity Training. This way […]
While preparing for my VCP5 exam I was reading a lot of material including the upgrade guide. As with all upgrade, not all upgrade paths are supported. That’s why I thought to make a list with some upgrade considerations. vSphere5 only comes with the ESXi hypervisor architecture. The main distinction is that ESX comes with […]
“The server has poor performance because the server is running virtual.” “Virtual server are always slower than physical servers.” “My vSphere server has 60% CPU utilization but the performance of my Virtual Server is poor.” When you are a VMware administrator you constantly have to defend your self that it doesn’t matter if a server […]
Even do vSphere is telling you that the overall CPU utilization is no more than 60%, this doesn’t indicated that your VM isn’t running low on CPU resources. In this part where going to deepdive in troubleshooting CPU performance related issues on your vSphere environment. Although I’m using vSphere 5.0 for my screenshot, most of […]
Just a quick post about something I noticed while configuring a new vSphere5 host with a Broadcom iSCSI Adapter. This is not a real iSCSI HBA but a vmnic with TCP/IP offloading. This offloading feature benefits the performance of iSCSI because the vmkernel doesn’t have to do as must work as with a normal vmnic […]
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