Virtualization Pro:

Eric Siebert


July 9, 2009  2:29 PM

Will Google save VMware from Novell-like fate?



Posted by: Eric Siebert
Eric Siebert, Microsoft, Novell, VMware

There has been some talk recently about the possibility of VMware becoming the next Novell and fading away into obscurity due to Microsoft entering the...

July 8, 2009  3:20 PM

Scheduling virtual CPUs



Posted by: Eric Siebert
CPU, Eric Siebert, ESX, scheduling, VMware

Recently someone asked me what VMware scheduling is, so I thought I would cover that in this blog post. Scheduling, or virtual CPU scheduling, happens behind the scenes and is not a very visible component of virtualization, but is absolutely critical for virtualization to work properly. You...


July 1, 2009  3:13 PM

The votes are in: Favorite vSphere enhancements



Posted by: Eric Siebert
Eric Siebert, features, vSphere

Now that users have started using vSphere, I wanted to know which new technologies in the latest ESX platform release are most popular. I ran two polls on my website, and the survey results are in: 


June 30, 2009  9:03 PM

Three ways to kill a frozen vSphere ESXi host virtual machine



Posted by: Eric Siebert
Eric Siebert, ESXi, stuck VM, VMware, vSphere

At some point, you may need to know how to kill a stuck or frozen VMware vSphere 4.0 ESXi host virtual machine when the traditional power controls do not work. As with VMware ESX, there are several methods, which I covered in a previous post,


June 25, 2009  3:35 PM

More details on VMware’s Fault Tolerance feature



Posted by: Eric Siebert
Eric Siebert, Fault Tolerance, VMware, vSphere

This week's VMTN Community Roundtable podcast was about Fault Tolerance (FT). Henry Robinson and Karen Ritter of VMware joined to provide information about the development and future of FT. Here's a...


June 23, 2009  3:34 PM

Killing a frozen VM on a vSphere ESX host



Posted by: Eric Siebert
Eric Siebert, stuck, virtual machine, vSphere

Occasionally virtual machines (VMs) get stuck in a zombie state and will not respond to a power-off command using the traditional vSphere client power controls. Rebooting a host will fix this condition -- but rebooting is usually not an option. Fortunately, there are a few methods for forcing the...


June 22, 2009  6:13 PM

The key to successfully virtualized Domino servers



Posted by: Eric Siebert
Eric Siebert, ESX, Lotus Domino, VMware

Although there are several tech notes that suggest otherwise, most Lotus Domino workloads can be successfully virtualized. I thought I'd review some of the tech notes as they seem to be discouraging people from virtualizing Domino servers. Both of the notes I'll review blame the virtualization...


June 17, 2009  4:55 PM

VMware’s hardware compatibility list



Posted by: Eric Siebert
compatibility, Eric Siebert, hardware, VMware

VMware publishes a guide called the Hardware Compatibility List (HCL). The HCL lists all of the hardware components that are supported by each version of ESX and ESXi. This very important guide is divided into different sub-guides, which...


June 9, 2009  1:55 PM

Upgrading production servers to vSphere: When and why



Posted by: Eric Siebert
Eric Siebert, Upgrade, VMware, vSphere


June 4, 2009  5:27 PM

Licensing complications frustrate vSphere users



Posted by: Eric Siebert
Eric Siebert, licensing, VMware, vSphere

VMware vSphere is a free upgrade for licensed customers with active Support and Subscription (SnS), but many users have reported problems obtaining their new vSphere licenses from VMware. Because VMware decided to go with a simpler license key instead of a more complex license file, new license...


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