The Virtualization Practice

Tag Archive for VMware

vSphere 4.1 Released – More Dynamic Resource Load Balancing

With the release of vSphere 4.1, VMware has added to their Dynamic Resource Load Balancing (DRLB) suite of tools that I hinted at in my post on Dynamic Resource Load Balancing that I wrote last week as well as providing new memory over commit and other functionality. In essence, vSphere 4.1 is more than a point release, this update includes many features that aid in security, reliability, and is a direct response to customer requests.

During the Virtualization Security Podcast on 7/8, Vizioncore’s Thomas Bryant joined us to discuss the state of virtualization backup security and forensic use of such backups. In the world of virtualization, backups are performed mostly by 4 distinct vendors: VMware Data Recovery (VDR) and VMware Consolidated Backup (VCB), Vizioncore vRanger, Veeam, and PHD Virtual Backup for vSphere. Each of these provide the most basic of security capabilities:

* Encrypted tunnels for data movement (SSL)
* Encryption of the backup

But in the increasing global nature of businesses and the difference in privacy laws between townships, states, and the need for Secure Multi-Tenancy, backup companies fall short with their products while making it increasing harder to use backups as a source of forensically sound data.

During the Virtual Thoughts podcast on 6/29/2010, the analysts discussed various hardware aspects of virtualization trying to determine if the hypervisor was to move into the hardware? and if so how much of it? as well as whose hypervisor? and lastly such a move part of any business model?

Virtual Thoughts is a monthly podcast that looks at the entire scope of virtualization to discuss new trends and thoughts within the virtualization and cloud communities.

This weeks podcast started with a discussion of TPM/TXT and the boost it gives to virtualization security. Since TPM/TXT is based in the hardware and provides a measured launch of an operating system, the next logical discussion was on whether or not the hypervisor would be placed into the hardware?

There is a cardinal rule that we should all know about, especially for those of us who have spent a lot of time developing kickstart scripts for automated builds of the VMware hosts in your environment, that you do not use windows word editors like Notepad or WordPad when working with Linux files. If you use notepad to edit Linux files it will add unwanted line feeds (LF) to the file which may cause the file to be misinterpreted. If you must use Microsoft Windows as your client OS use Microsoft WordPad which does not modify the file in this way.

There is a great deal of marketing hype about which hypervisor is better but I have spent some thinking about this and really have to wonder if the hypervisor is what we should really be focusing or concentrating on. A lot of third party vendors are starting to port their products to be able to work with both hypervisors but what about the management server itself? When third party application vendors design their applications to work with VMware or Microsoft hypervisors they have been writing plug-ins for their product to work inside the management server systems and or its client.

I you buy vSphere 4 (or 4.1) after June 9th, you get a free copy of SLES to run on any CPU on which you have a valid license for vSphere. This lines up SLES on vSphere alongside Windows on Hyper-v, in both cases the O/S and the hypervisor are supplied under the same license. This obviously lines up SLES on vSphere alongside Windows on Hyper-v, in both cases the O/S and the hypervisor are supplied under the same license. In the long term, Licensing SLES leaves out a tantalizing prospect that VMware can build its own semi-official version of Azure, using vSphere, SLES and Mono, without a Windows server operating system in the mix.

VMware has now announced two new advanced certifications that will be available for registration in the very near future. VMware Certified Advanced Professional 4 – Datacenter Administrator (VCAP4-DCA) and VMware Certified Advanced Professional 4 – Datacenter Design (VCAO4-DCD). Both these certification and exams are a stepping stone for the VMware Certified Design Expert on vSphere 4. These new exams are in all intensive purposes an updated version of the exams needed for the VCDX certification for ESX 3 but with the added bonus of advanced certifications during the journey to achieving the coveted VCDX certification. Let’s take a quick overview of the new certifications.

PhD Virtual has gained its second round of funding with investment from Citrix amongst others as discussed within our post News: esXpress is no more but what does this mean for XenServer? Up until this point it looked like Citrix was out of the server hypervisor wars and backing Microsoft’s Hyper-V play. Yet this looks on the surface like a basic shift to that direction. Yes, XenServer was placed into the OpenSource community and the latest improvements, such as the Open VSwitch integration and a new releases emphatically say that XenServer is alive and well and that its ecosystem is growing for that matter so is Hyper-V’s.