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To: Petz who wrote (148398)	1/20/2005 12:13:27 AM
From: eracer	Read Replies (1) \| Respond to of 275872

ExtremeTech has a fairly old but good article on LaGrande here: extremetech.com I wonder what sort of performance hit all of this security will cause. I'm sure Intel and AMD will be avoiding DRM references like the plague when mentioning LaGrande or Presidio in public. They will stress how it can always be turned off, but what happens when new apps and web servers require it to be on? Looks like it has a lot of implications beyond securing audio and video as well. Reverse engineering, tweaking and troubleshooting software could become much more difficult or impossible if apps and data are always encrypted or not accessible. Virtualization will be important for servers than desktops, but I'm sure some power desktop users would find it useful. I currently have Windows XP Home, Windows XP Pro, Windows 98SE, DOS 6.22 and Mandrake 10.1 installed on individual partitions spread over three different computers. It would be nice to run more than one at a time for troubleshooting and convenience. I'd have Linux running all of the time if I knew Windows XP was a keystroke away when I needed it. What I'd like to know is if virtualization being hardware based makes OS switching programs less expensive and easier to create, or if it is solely for improving performance over the current software based solutions.

To: Petz who wrote (148398)	1/20/2005 8:53:42 AM
From: Plissken	Respond to of 275872

The most obvious benefit of virtualisation is to better utilize server hardware. It's rather expensive and often only requires a fraction of the computing power and resources to do just one thing. By virtualising multiple servers onto one physical machine you can quickly get redundancy (just move the image of the operating system and installed services to another physical server) and better utilisation of your investment. For reasons of stability and security, however, you want to isolate the virtual servers from each other to prevent hacking across software boundaries in case one of the virtual machines gets compromised. Typically you'd buy a set of 2-way or 4-way servers, keeping them physically redundant and load them with a number of virtual servers that feed off a common storage solution (which itself is set up redundant internally). Only exception would be computational or I/O demanding activities, which are better left one-on-one to a physical machine.