Device or Resource Busy

You may read my post How to find which ESXi 5.1 host lock the VM, it’s a solution to figure out which host lock down a file. But sometimes you may face similar problem but different solution. You are able to browse the file by CLI or GUI, but cannot delete by either way. It returns … Read more

Virtual Machine Disappeared on vCenter Inventory

Just googled this issue, some of people got similar problem, following was my problem and solution, hope it’s useful for you. Virtual machine maybe lost on vCenter Server inventory for some reason, it’s also disappeared on ESXi inventory when you connect to the individual host directly. You are able to find the VM process by esxcli … Read more

How to get HBA WWPN of ESXi hosts

It’s busy month, I haven’t update my blog since I back from Phuket with my wife. I’m running into multiple projects, a little overload. Just a quick share, my storage team ask me provide WWPN of all hosts to do a health check. it’s nightmare to pull out the data from vSphere client or web … Read more

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, … Read more

Windows cannot be installed on drive 0 partition 1

I think Windows Server 2012 will be next popular server OS just like Windows Server 2008, it’s also a nice hypervisor OS on virtual world. How do you think? Installation is first step to experience the wonderful OS, you may see some strange problem during that step just like me. Today’s topic occurred long time … Read more