Mental Ward

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Excitement Builds for Client Hypervisors

I've been doing a lot of reseach, reporting and writing for an upcoming cover story on bare-metal client hypervisors, and the more I dig into this topic, the more I'm becoming convinced that they could well be the key to virtual desktop infrastructure (VDI).

A number of major vendors are developing them, including VMware, Citrix and Red Hat. There are already several on the market, from Virtual Computer (although in a "controlled release" program that requires an invitation) and, interestingly, from Phoenix Technologies -- yes, that Phoenix, the BIOS guys.

The advantages these client hypervisors give to admins are substantial, starting with security. I talked to one admin in the Virtual Computer pilot program who listed the NxTop hypervisor's ability to encrypt a disk as the No. 1 reason he went with it. That's something I hadn't much considered before.

When you add into that the ability to run multiple OSes side-by-side, including running two different versions of the same OS, one locked down for corporate use and one for personal use, the advantages of the client hypervisor get more obvious.

It's also true that the ability to run a desktop on any device, including smartphones, is intriguing. But most of my research so far doesn't indicate that functionality as being a top reason for using a client hypervisor, despite VMware's touting of that use of the technology.

In any event, I'm becoming more convinced that bare-metal client hypervisors are one of the "coming things" in virtualization. Are you? Tell me or comment below.

Posted by Keith Ward on 05/19/2009 at 10:27 AM


Reader Comments:

Wed, May 20, 2009 Doug D California

I have the same questions/concerns that Jim B has. Microsoft will play a huge role in whether or not client type I hypervisors truly add value. The concern everyone has when using client hypervisors is 1. will performance slow?(graphics, disk I/O, etc.) 2. will the VM truly be mobile/transferrable to another machine? 3. will we have to purchase all new hardware (Intel VT-D chips) in order for this stuff to work properly? The good news, Windows 7 is likely to create a hardware refresh for most customers but all signs point to the fact that Windows 7 is not going to take advantage of VT-D out of the box. Therefore, why spend the extra money on hardware/chips that aren't being used by the new OS which is the driver for buying new HW. VMware & Citrix are going to do their best to shim their hypervisors under Windows 7 but all Microsoft has to do is play the WHQL card and the OEM vendors will back off, especially if the hypervisor slows the performance of the PCs in anyway. On paper the idea sounds interesting but lots of questions need to be answered first.

Wed, May 20, 2009 Craig Maryland

I have been predicting this for the past few years. It just makes so much sense. You could run Windows and Linux at the same time and use what works best for your requirements. Taking this one step further, it would be nice to have some UI front end that could actually pull from the various backend OS's. In this way you would have a standard look/feel but could use the features of the any OS. Someday....

Wed, May 20, 2009 Tom H. Pittsburgh

It is funny you bring this up now. I have been requesting this as a future idea for years and even mentioned the idea elsewhere on these blogs. It is about time the idea finally hits mainstream. It only makes sense. If you can recognize a savings in the servers where there are a few servers used for several clients; why shouldn't the client be virtualized to maximize savings. Admittedly single perpose servers allow for greater consolidation conservation, but there are many clients that are purchased for the sole purpose of supporting that one legacy software. In addition, virtualizing the software would provide much better customer continuity and minimize down time while maximizing manageability for deskside personnel. VDI may even make deskside personnel essentially obsolete as everything moves to the datacenter.

Tue, May 19, 2009 Jim B Oregon

I am very interested in this technology because of the security and standardization opportunities that it addresses. Microsoft has indicated that Win 7 will have the ability to boot a desktop right off of Hyper-V - which makes the possibility of a true standard corporate image very possible. Many questions remain, including how far they abstract the hardware. Does hardware optimized video go away with this type of virtualization? What about the other value-added parts of the modern desktop or laptop? Does HyperV abstract too much, or not enough? Only time will tell, but we will be testing...

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