Virtualization Pro:

Rick Vanover


July 22, 2008  9:17 PM

Strategies for determining the number of hosts per cluster in VI3



Posted by: Rick Vanover
Rick Vanover, VI3, Virtualization

In discussions with other administrators, determining the number of hosts per cluster gets a wide range of response. Although there are a number of factors, the unfortunate simple answer for every installation is "it depends." Let's tour of some of the reasoning behind various hosts per cluster...

July 10, 2008  6:12 PM

VMware Server 2.0 virtual machine version compatibility note



Posted by: Rick Vanover
Rick Vanover

It goes without saying that working with a beta incurs a small amount of risk. With VMware Server 2.0 beta 2, I came across a particular situation that caused an issue with a virtual machine (VM). My CentOS Linux system had been running VMware Server 2.0 beta 1 since its initial release. On a...


June 30, 2008  8:51 PM

Isolate ESX hosts in separate clusters for maintenance, upgrades



Posted by: Rick Vanover
Rick Vanover, VI3, Virtualization, VMware ESX, VMware High Availability (VMware HA)

Performing key maintenance on a VMware Infrastructure 3 (VI3) host OS or can be an involved process, as can the process of simply adding a host. Because of the length of time that a system may be offline or because of what exactly is being performed, having the hosts in an isolated cluster can...


June 20, 2008  3:59 PM

64-bit guest operating system issues avoided with BIOS configuration



Posted by: Rick Vanover
Rick Vanover, Virtualization, VMware ESX

On more than one occasion, I have built a new ESX host system and had immediate migration issues with 64-bit guest operating systems. This is due to an easy-to-forget BIOS default that disables 64-bit processing. To save you the hassle of trying to diagnose why the migration may fail, here is a...


June 17, 2008  3:04 PM

Ensure VMware Infrastructure Client is current



Posted by: Rick Vanover
Rick Vanover, VI3, Virtualization, VMware ESX

When VMware issued VirtualCenter 2.5 Update 1 and ESX 3.5 Update 1 in April of this year, I felt that this release was mature enough to upgrade my environment. One observation I have made is related to the VMware Infrastructure Client (VIC) versioning. The


June 11, 2008  4:13 PM

Upgrading VirtualCenter does not update certificate store



Posted by: Rick Vanover
Rick Vanover, VI3, Virtualization

When logging into the VMware Infrastructure Client (VIC) or using the web interface to the VirtualCenter server, you are presented with a certificate message. Best practice or not, I usually accept the certificate and instruct the software to not ask me again about this topic. I have just completed...


June 9, 2008  8:59 PM

Changing the VMware Server 2.0 default permissions



Posted by: Rick Vanover
Rick Vanover, Security, Virtualization

I have been using VMware Server 2.0 (beta 2) on both Windows and Linux platforms for a while now. For Windows systems that are a member of an Active Directory domain, there are inherited permissions that may be assigned from Group Policy. If you want to change that, here are a couple of pointers in...


May 23, 2008  5:09 PM

Adding a remote datastore to VMware Server 2.0 beta



Posted by: Rick Vanover
Networking, Rick Vanover, Storage, Virtualization

I have been evaluating the VMware Server 2.0 beta on Windows and CentOS Linux systems since the release in November of 2007. The second beta of Server 2.0 was released in March, and both versions support adding remote datastores for guest virtual...


May 20, 2008  5:22 PM

Use VI3 maps to visualize storage distribution



Posted by: Rick Vanover
Rick Vanover, Storage, VI3, Virtualization, VMware ESX

You may not have used the maps feature within the VMware Infrastructure Client because large environments become difficult to decipher. The maps view has become an important part of visualizing certain elements of the overall configuration of an ESX environment. One of the more useful mapping views...


May 8, 2008  8:41 PM

Why you should upgrade to VI3 Update 1



Posted by: Rick Vanover
Rick Vanover, VI3, VMware Converter, VMware ESX, VMware High Availability (VMware HA)

VMware Infrastructure 3 Update 1, made available on April 10 2008, introduces some core updates to ESX Server 3.5, VirtualCenter 2.5, and the VMware Infrastructure Management Installer. The biggest reason to upgrade, however, is the inclusion of


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