Skip Links

Network World

  • Social Web 
  • Email 
  • Close

(Comma separation for multiple addresses)
Your Message:

Virtualization varieties, variants are vetted

Virtual-machine schemes come in two varieties, but each variety comes with its own variants
By Tom Henderson , Network World , 09/17/2007
  • Share/Email
  • Tweet This
  • Comment
  • Print

1. Native virtualization

The first variety -- sometimes referred to as native virtualization -- occurs when a hypervisor (also called a microkernel) directly virtualizes all host resources to multiple guest operating systems. That translates instructions that need systems resources on the fly via direct hardware-virtualization/system-instruction translation.

Direct translation presents a discrete virtual-machine appearance to each guest operating system and the applications riding on top of it.

Guest operating systems in this scheme don't need to be modified or be aware of the virtualized representation state of the hardware platform, because their resource needs are managed by the microkernel. VMware's ESX platform is a prime example of a direct hardware-virtualization system.

1a. Client direct-processor emulation

A variant of native virtualization is a process called client direct-processor emulation, where applications of another operating system are given operating-system resource-emulation capability. This scheme lets applications native to Windows XP work on Apple's Macintosh OS 10.4 using products from Parallels or Microsoft.

This is a scheme typically associated with desktop virtualization.

  • Share/Email
  • Tweet This
  • Comment
  • Print

Partner Content

Gartner 2009 Magic Quadrant for Job Scheduling

Gartner has positioned BMC CONTROL-M in the Leaders Quadrant of their "2009 Magic Quadrant for Job Scheduling." The report assesses the ability to execute and completeness of vision of key vendors in the marketplace. Read a full copy today, courtesy of BMC Software.

Download whitepaper

Dell's SMART Approach to Workload Automation

Read a compelling case study by EMA, Inc. to learn how Dell uses BMC CONTROL-M to cut cost and increase productivity with workload automation.

Download whitepaper

Workload Automation Cost Savings 2 Minute Video

A major computer manufacturer uses BMC CONTROL-M and just four people to schedule and run over 85,000 jobs every month. By switching to BMC CONTROL-M, they more than quadrupled the workload without adding a single staff member.  See how in this 2-minute video overview.

Go to video

Comments (3)
Login
Forgot your account info?

RE: VM management tools from Microsoft, VMware, XenSource leave room for improvementBy SUMj on September 17, 2007, 4:37 pmWe want to hear from YOU! Weigh in on these VM management tools, share your experiences or just let us know what you thought of the test results.

Reply | Read entire comment

Creative ways to manage VMwareBy Micronet on September 21, 2007, 2:34 pmSee Microsoft Subnet for more Microsoft-related news, blogs, security alerts, technical group. This is a little bit off topic from the test, but still interesting...

Reply | Read entire comment

RE: VM management tools from Microsoft, VMware, XenSource leaveBy Anonymous on November 19, 2007, 4:42 pmA majority of these vendors have lost focus on what’s a necessity in managing this virtual connection information. Its fine to have all of the bells and whistles...

Reply | Read entire comment

View all comments

Add comment
Anonymous comments subject to approval. Register here for member benefits.
Have a NetworkWorld account? Log in here. Register now for a free account.

Videos

rssRss Feed