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Blog & Tutorials

Virtualization blog featuring my home virtualization lab, tutorials, network topology and configuration guides in the virtualized environments.

VMware VCP 510/VCAP Exam Voucher Coupon Code

If you are planning to take the VCP certification exam before December 31st, 2012, You can use the below voucher coupon codes to get 25%...

Firewall, NAT and DNS, reverse DNS entries do not match Error

If you host your own email behind a NAT device or firewall, you've probably seen this issue come up at least once in your...

Poll: VMware vCenter Database Requirements and Issues

What Windows OS and database platform is your virtual infrastructure running on? With over 20 database software platforms, numerous OSes, there is bound to be problems and incompatibility issues. I've had an opportunity to deal with one of those issues over the last few days. At one of my clients, vCenter 4.1 was running on Windows Server 2008 R2 with SQL Express edition, everything was working as it should until the VMware vCenter services started failing, vSphere client would not authenticate and log system admins into management console, so in other words, major problems as server provisioning and deployments were delayed!

Office Communications Server Front-End service terminated

We deployed Office Communications Server 2007 last year - a great communications tool to have within your enterprise. Few weeks ago, Microsoft released update...

Debug and Optimize vBulletin with Config Constants

If you use vBulletin forum software, you probably know what a wonderful piece of code it is and type of features, enhancements it offers...

Exchange 2010: External email fails Delivery to a Distribution List Email Address

In your exchange server setup, you have the ability to create distribution lists or distribution groups as they are commonly known in Exchange Management...

VMware vSphere 5.1 New Features and Enhancements

Vmware announced the new release of its virtualization software, vSphere 5. Below is just brief list of new features. VMware vSphere 5.1 Features Setup and Install vSphere...
VMware workstation VM ownership error

Taking Ownership of VM fails, VM appears to be in use, stuck in state...

While working in Vmware workstation, I lost connectivity to a LUN where I'm hosting virtual machines for workstation. As it turns out, the VMs were...

Blog & Tutorials