My VMware blog

To help others as others have helped me

January, 2013

How to add a new VMFS Datastore via PowerCLI

I recently wanted to know how to add a new iSCSI LUN as a new VMFS datastore via the PowerCLI. After some initial research and searching the online PowerCLI help I figured out the steps needed to complete such a task. To add a new LUN as a new VMFS Datastore follow these instructions; Configure […]

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Unable to perform unclaim. Error message was : Sysinfo error on operation returned status : Busy. Please see the VMkernel log for detailed error information

During my VACP5-DCA studies I was testing the commands required to mask a LUN from the host when I suddenly stumbled into the following error message. “Unable to perform unclaim. Error message was : Sysinfo error on operation returned status : Busy. Please see the VMkernel log for detailed error information” The command that caused […]

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Usefull list of VMware VCAP5-DCA Study Resources

During the last few weeks I have begun to study for my VCAP5-DCA which I am currently intending to take in May 2013. The first problem I came across was the lack of official VMware VCAP5-DCA study resources which was unusual for me haven taken many Microsoft and VMware exams in the past and always […]

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Quick Tip: How to create an RDM mapping file via the CLI

Before we begin Before we can create an RDM mapping file using the CLI we need to locate the following information The VML of the device The file location of the Virtual Machine The tools we will use to find this are An SSH terminal Vmkfstools esxicli Obtain the VML details Do not map the […]

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What documents are available in the VMware VCAP5-DCA Exam?

During my studies for the VMware VCAP5-DCA Exam I needed to find out what documents were accessible during the exam and couldn’t find the information on Google so I turned to the VMware forums and posted the questions. As always the response was quick and within a few minutes I had my answer thanks to […]

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How to find out what VAAI supported features your shared storage has in ESXi 5

Recently during the building of my new home lab I have been experimenting with different free storage providers such as FreeNAS, Nexenta, OpenFiler and was pleased to see in the vSphere Client that in some cases it reported that Hardware Acceleration (VAAI) was supported. I performed a few tests to see if it was indeed […]

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How to access USB and Other PCI Devices in VMware ESXi5 VMs with VMDirectPath

During the course of my VCAP5-DCA studies I reviewed this article in order to understand and get to grips with VMDirectPath. I found the article really useful but noticed that it was written for ESXi4 and not ESXi5 so i went off and checked a few things to make sure that it is still relevant. […]

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