Data Center Must-Reads • • • • 1: Use fixed size disks Generally speaking, when we allot storage space for our VMs, we stick with the default dynamically allocated disk types. Download mavericks os x. This makes sense, especially when you are limited in space and aren't certain how much space you'll need for your VM. However, the dynamically allocated disk is not nearly as efficient as the fixed disk. Because as you use space on a dynamically allocated virtual hard disk, VirtualBox must accommodate and adjust the VM's storage space, which causes the performance to take a hit. Instead of using dynamic disks, opt for fixed disks ( Figure A) and give the disk plenty of space. Note about this: The performance increase will be significant when used with spinning hard drives and less so with solid state drives. When creating a new VM, your inclination might be to bump up the RAM used to ensure a smooth running guest. Although that will work in some cases, there might be instances where more processors would be advantageous over a significant amount of RAM. If you're setting up a VM for a server that demands heavy processor use, your best bet is to up the amount of CPUs VirtualBox will hand over to the VM. With the VM powered down, you can do this in Settings| System for the VM by sliding the Processor(s) slider to the right to increase the CPUs ( Figure B). Increasing the CPUs for a VM. VirtualBox: increase the size of virtual disk [Update]. I produced, from my website, an video tutorial regarding the installation of a Windows system 7 on a Mac with VirtualBox. As Windows 7 system needs only 12 about 13 GB space, that seems actually enough and one do not change this size. But today, with more and more applications, my. All you need is an Intel-based Mac with 512MB of RAM (1GB or more memory is highly recommended). As of VirtualBox 2.1.2 (the latest version at the time of writing this article), you need around 30MB of hard disk space for installing VirtualBox itself and you should allocate at least 5GB-10GB for every virtual machine you install. When you commit resources for the guests, do not overextend your RAM and CPUs in such a way that you leave the host grinding to a halt. Your host machine should have at least 1 GB of RAM and plenty of CPUs remaining so the host OS and VirtualBox can function smoothly. 3: Install the Guest Additions You should consider installing the VirtualBox Guest Additions a must for every VM you create. The Guest Additions are additional device drivers and system applications, installed on the guest machines, that optimize the guest operating system for better performance and usability. How you install the Guest Additions will depend upon what operating system is running the Guest, and if you're using VirtualBox with a GUI desktop or a console-only server. If you're installing with a GUI, start the VM and, once it is up and running, click Devices| Insert Guest Additions CD Image ( Figure C) and walk through the presented steps. ![]() ![]() Using VirtualBox for Mac to Run Windows Following are the general steps to get Windows running under a virtual environment: • Download and install the virtualization software. • Configure a virtual environment and install Windows.
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