Virtualization Pro:

Eric Siebert


March 12, 2009  9:10 PM

Visualizing a virtualization project



Posted by: Eric Siebert
Eric Siebert, Virtualization, VMware

Today I finally bid farewall to a mountain of old server hardware that was the result of a virtualization project. Dozens of old physical servers have been sitting in an old storage room for over a year having all been replaced by just four new virtual hosts. These old servers served well in their...

March 5, 2009  3:27 PM

What it means to be a vExpert



Posted by: Eric Siebert
Eric Siebert, vExpert, VMware

Having been selected as a vExpert by VMware for 2009, I wanted to comment on what I think being named a vExpert truly means. First I want to comment on what this award is about. I believe the name vExpert is a bit misleading as it's not really about being an expert -- although the people that...


March 3, 2009  4:41 PM

Collecting diagnostic data from hosts and vCenter Server



Posted by: Eric Siebert
diagnostics, Eric Siebert, ESX, ESXi, vCenter Server, VMware


February 27, 2009  8:25 PM

Virtualizing Lotus Domino servers



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

A lot has been written about virtualizing Microsoft Exchange, but comparatively little on virtualizing Lotus Domino which is also a very popular email platform used by thousands of companies. I was a Domino administrator for more than 10 years, so I thought I would share some tips for running...


February 24, 2009  6:29 PM

vCenter Server 2.5 Update 4 release brings Performance Overview Charts



Posted by: Eric Siebert
Eric Siebert, vCenter Server, VMware

Many people were hoping that VMware would use VMworld Europe to announce the release date of the next generation VI3 software called vSphere 4.0. While this didn’t happen, VMware did release the next maintenance version of vCenter Server 2.5, which is


February 23, 2009  9:19 PM

VMware ESX for free? The heat is on



Posted by: Eric Siebert
Eric Siebert, ESX, free, VMware

Now that Citrix is giving away the XenServer hypervisor for free (albeit sans advanced features), is it time for VMware to follow suit by giving away the base edition of...


February 19, 2009  9:42 PM

Lord of the virtual rings: Why hardware matters to your VMs



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

x86 computer operating systems utilize protection rings that provide a range of protection levels called rings in which code can execute. These rings are arranged in a hierarchical manner from the most privileged (most trusted, Ring 0) to least privileged (least trusted, Ring 3) as shown...


February 16, 2009  8:23 PM

A brief history of VMware



Posted by: Eric Siebert
Eric Siebert, ESX, history, Virtualization, VMware


February 13, 2009  7:47 PM

Monitoring VMware snapshot deletion progress



Posted by: Eric Siebert
Eric Siebert, ESX, Snapshots, VMware

A recent KnowledgeBase article from VMware describes a method to monitor the snapshot deletion process which can take a long time if the snapshot has been active for a while. When you delete snapshots using the VMware Infrastructure...


February 9, 2009  7:47 PM

Defragmenting virtual machine disk files



Posted by: Eric Siebert
defrag, Eric Siebert, ESX, virtual disk, VMware

There's an ongoing debate about whether or not VMware users should defragment virtual machine disks. We’ll answer this question in two parts: the first part will cover virtual machine (VM) disks inside a guest operating system. The second part will cover VM disks outside of a guest operating...


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