Currently Browsing: Virtualization

Network performance with VMXNET3 on Windows Server 2012 R2

Introduction In this post we will cover an updated version for addressing VMXNET3 performance issues on Windows Server 2012 R2. As with an earlier post we addressed Windows Server 2008 R2 but, with 2012 R2 more features were added and old settings are not all applicable. What To Change According to VMWare you may experience issues similar to: Poor performance Packet loss Network latency Slow data transfer... read more

Using HyperBox to Manage Your VirtualBox 5.0 Servers

Introduction So you have a few instances of VirtualBox running on a few systems and wondering if there is a central tool to manage them similar to vCenter. Well there is such a tool called Hyperbox.  According to the site. Hyperbox is a free virtualized infrastructure manager across your different hypervisors. It aims to provide a free alternative to commercial products like VMware vCenter/ESXi and Citrix... read more

How To Install VirtualBox 5 Additions on CentOS 7

Introduction In this post we will discuss how to get VirtualBox 5 guest additions installed on CentOS 7. Installing VirtualBox Additions First make sure updates have been applied and if there was a kernel update that the system was rebooted. Do this the typical way by running the command. $ sudo yum -y update Now that we have the latest updates and have rebooted we need to install epel to allow us to get... read more

How To Perform Windows P2V using Disk2Vhd for VirtualBox

As with a previous article on creating a P2v for use by VirtualBox using VMware’s vCenter Converter for Windows, we will continue and describe how to complete the task using  Microsoft’s Disk2Vhd (SysInternal Suite). What is Disk2Vhd? Disk2vhd is a utility that creates VHD (Virtual Hard Disk – Microsoft’s Virtual Machine disk format) versions of physical disks for use in Microsoft... read more

How To Install VirtualBox 5 on Fedora 21

The latest VirtualBox has been released and available for use! Now it is time to get VirtualBox 5.0 installed on Fedora 21. In this post we will cover installing dependencies needed on Fedora, creating a VirtualBox repository and installing VirtualBox 5. Preparation First there are several packages that need to be installed on Fedora 21. You will need dkms, kernel-headers, kernel-devel, gcc.  When you... read more

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