Blog & Tutorials

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

Mapped direct-access LUN that is not accessible error

On Vmware ESX or ESXi: If you are trying to Vmotion a Virtual Machine (VM) that has a Raw Device Mapping (RDM) attached, you may...

How to Upgrade from ESX/ESXi 4.1 to ESX/ESXi 4.1 Update 1

Its been almost 3 months since VMware released an update for its vSphere 4 product. I've began upgrading my lab and clients and wanted...

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...

Blog & Tutorials