Category : Virtual Machines

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VMware Virtual Machine Memory Guide

Tweet Memory Virtualisation Basics When an operating system is installed directly onto the physical hardware in a non-virtualised environment, the operating system has direct access to the memory installed in the system and simple memory requests, or pages always have a 1:1 mapping to the physical RAM, meaning that if 4GB of RAM is installed,

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Virtual Machine Memory Overhead

Tweet Windows virtual machines require more memory with each passing release and software demands on memory are becoming larger all the time.  In a vitual environment it is quite simple to increase the amount of virtual memory granted to a virtual machine, especially with features such as hot add.  The ability to dynamically increase the

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Understanding virtual machine memory

Tweet Memory in a virtualised environment is split up in three memory types. Virtual Memory – Allocates memory through a syscall to the operating system.  This runs at the application level in the same way on virtual machines as in physical machines Physical Memory – Runs at the OS level.  In simplistic terms it uses

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Virtual Machine configuration and maximums

Tweet Virtual machines are made up of the following files. vmname.vmx – Config file vmname.vmdk – Describes charateristics vmname-flat.vmdk – (hidden by default) Contains the data vmname.nvram – VM BIOS vmname.log – log file vmware#.log – VMware log file vmname.vswp – Virtual machine swap file on the ESX(i) host vmname.vmsd – snapshot descriptor file Limits

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