Download Advanced Server Virtualization: VMware and Microsoft by David Marshall PDF

By David Marshall

This publication was once first released 3/17/2006, seeing that then, virtualization has developed, new models have been published and new applied sciences have emereged. The booklet talks approximately VMware GSX which used to be discontinued over a 12 months in the past, ESX 2.5 (Current model is 3.5 with 4.0 round the nook) and MS digital Server that is being changed with Hyper-V on home windows Server 2008. No point out of any opensource choice (Like Xen) which wasn't mainstream in '06 but. an excellent learn in case you are drawn to the background of virtualization.

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Additional resources for Advanced Server Virtualization: VMware and Microsoft Platforms in the Virtual Data Center

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Like the virtual floppy drive, a virtual CD/ DVD drive can read physical media that is inserted into the host server. By mapping the host server’s CD/DVD drive to the virtual machine, the guest operating system will interact with the host drive, as if the media were physically inserted into the VM. Also like the virtual floppy drive, there is an important distinction to be made between the virtual and the physical CD/DVD drive. A virtual CD/ DVD drive can be mapped to a physical file located on the host’s file system.

The VMM’s primary task is abstracting the real computer resources and providing the virtual environments in which operating systems may be installed. These environments are usually referred to as virtual machines. A virtual machine is a single, isolated execution environment that is created through software by the virtualization layer, which appears to be almost exactly like a physical x86 computer. A virtual machine, also referred to as a VM or virtual server, represents a single virtual computer.

In most cases, there is a one-to-one ratio between each unit of memory assigned to a virtual machine as it maps to the host server’s physical memory. For example, if a host server has three virtual machines and VM A is configured with 256MB of memory, VM B is configured with 256MB of memory and VM C is configured with 512MB of memory, a total of 1GB (1024MB) of memory is mapped between the virtual machines and the host server’s physical memory. The host server would typically need at least 1GB of memory to support the virtual machines plus enough memory to support the host operating system, the virtualization platform and any other applications that may be installed on the host server.

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