The Virtualization Practice

Tag Archive for VMware

Many times we virtualization experts push for backups without the agents as these backups tend to be in our opinion, cleaner and faster. But what if you could get the benefits of your existing backup tools (such as Tivoli) but gain the power and advantages of using all the possibilities within the virtual environment. For VMware vSphere this is possible using the Pancetera backup tools.

In my last post I talked about how to resolve an issue where a disgruntled employee walked out with the USB memory stick that had VMware ESXi installed on it. In that particular case, the VMware ESXi host kept on running and I was able to get a backup and restore the current running configuration via some PowerShell Magic. All in all it was a pretty easy issue to resolve with very little down time. This got me thinking about which method would be the best option to use in the Enterprise. Installing to local disks or installing to a USB memory stick.

I got a call from a client today that is running a VMware ESXi server as a proof of concept in their SMB environment. The admin that setup the VMware ESXi Server configured the ESXi server to boot and run ESXi from a USB memory stick. Things have been running fine but the company and the administrator that setup the server had a falling out, so to speak, and the administrator left the company and took the USB memory stick with him. The server continues to run fine as ESXi basically runs from memory but, rebooting this host is now not an option since there are no files available for the host to boot from. So what is the best way to recover and get things back to normal? I did a little research and the information that I have found will work will both ESXi 3.x as well as vSphere ESXi.

When I first got started in virtualization it was a very new technology and during that time there were not that many resources available to the virtualization administrator and sometimes it would have been nice to be able to see what others were doing and to be able to share my thoughts and ideas with others to make sure I was presenting the best possible solution to my customers. During these early years the VMTN Community Forum was established and these forums were the place to do this collaboration. I found this to be one of the best arenas to ask questions and share ideas. The VMTN Community area quickly took off and in a lot of cases was the quickest way to find an answer, solution to your problem or issue you were trying to resolve.

While at VMworld 2010 in San Francisco this year, I got to meet up and talk with Robert from Atlantis Computing. Our conversation was about VDI and he was quite proud of the capabilities that Atlantis ILIO brings to the table in the VDI space. The conversation went well and got me interested in investigating a little further on the technology. Atlantis ILIO or “VDI Booster” as they like to call it, is a solution to address the complexity and high costs of VDI Deployment and management. ILIO has been architected to support most of the main VDI players like VMware View, Citrix XenDesktop, Microsoft Hosted Virtual Desktop (HVD),and Quest Software vWorkplace to name a few.

VMware rethinks it plans for a mobile hypervisor

In a surprising about-face VMware has stepped back from its previously announced plans to release a type I hypervisor in support of its bid to address the mobile hypervisor market. Instead at VMworld 2010 in San Francisco during Session DV7701 “Embracing Employee-Owned Mobile Phones – The Why and How”, Stephen Deasy (Director, R&D, VMware) and Srinivas Krishnamurti (Senior Director, Mobile Solutions, VMware) shared their new plans for a type II mobile hypervisor platform.

If we are going to start over, why not really start over and reinvent the entire infrastructure and management software industries in the process. That way we end up with an infrastructure that was actually designed for the dynamic, agile, and scalable use cases that we are trying to address with a green field approach, and an appropriate set of management tools as well. Is this going to happen? You can bet that there are already VC funded startups in stealth mode working on it.

I saw a question get posted on twitter that kind of intrigues me a little. The question was pretty straight forward. “How many virtual machines should I be able to run on a host?” That is really a fair question in itself but what I find intriguing is that this is the first question he asks. Is this really the first thing administrators think to ask when designing their environment? After all there is no set formula on how many virtual machines you can run on a host. You can be a little more exact when working with VDI because for the most part all the virtual machines would be set up pretty much the same way and the numbers can be a little more predictable. That would not be the case when working with server virtualization. You are going to have servers all with different configurations and amount of resources provisioned to the virtual machines. This variation is what will change your slot count and the amount of virtual machines you can run on the host.