With VirtualBox, such a complex setup (then often called an “appliance”) can be packed into a virtual machine. For example, installing a complete mail server solution on a real machine can be a tedious task. Software vendors can use virtual machines to ship entire software configurations. Since you can configure what kinds of “virtual” hardware should be presented to each such operating system, you can install an old operating system such as DOS or OS/2 even if your real computer’s hardware is no longer supported by that operating system. To wrap it up, it is safe to say that Oracle VM VirtualBox can come in handy to both novices and experts: while the former can get their virtual machines up and running in no time, the latter can customize their virtualized environment to the tiniest details. Oracle VM VirtualBox also includes versatile hardware support, allowing you to create virtual machines with multiple virtual CPUs (regardless of how many cores you have physically on your PC), that recognize USB devices, or that have multi-screen resolutions, integrated iSCSI support, and PXE network boot. If you are an expert user, you can also benefit from the specialized functions of Oracle VM VirtualBox, such as shared folders, seamless windows, 3D virtualization, multi-generation branched snapshots, remote machine display and modularity. Whether you are a professional software tester or simply like to test a variety of apps before settling on the one that best meets your needs, you are probably aware that a virtualized environment can save you a lot of time: you can install any app without fear of it messing up your previous settings, and you can uninstall it just as easily. This allows you to run software designed for one operating system on another (for example, Windows software on Linux or a Mac) without having to reboot. VirtualBox Portable allows you to run multiple operating systems at the same time. VirtualBox Portable’s features are useful in a variety of situations: Running multiple operating systems at the same time. VirtualBox is a powerful virtualization product that can be used in both the enterprise and at home. It is now the only professional quality virtualization solution that is also Open Source Software, aimed at server, desktop, and embedded use. This is not a problem it just means I can only run up to a few of them at a time.VirtualBox Portable is a hardware-specific full virtualizer. For example, I have about 10 virtual machines, most of which have 1 GB of RAM, on a host machine with 4 GB of RAM. When the virtual machine is turned off, suspended, hibernated, or otherwise not running, this RAM will not be in use. It would not work out well to have two VM's with that amount of RAM!įinally, your virtual machine will typically reserve all the RAM you give it, whenever it is running. If you plan to run multiple virtual machines, then giving a virtual machine 2.7 GB of RAM out of a total of 6 GB is probably too much. I give most of my virtual machines, including Ubuntu virtual machines, 1 GB of RAM, even when I have enough physical RAM available that I could allocate more. However, depending on what you plan to do with your Ubuntu system, it probably doesn't need 2.7 GB of RAM. If you're running a single virtual machine, the suggestion you read is OK (provided that your host machine has enough RAM, which it does). You should give virtual machine however much RAM you need for the tasks you're using it to perform.
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