VirtualBox is Sun’s (soon to be Oracle’s) virtual machine emulator for Windows, Linux and Mac OS X. It’s an excellent piece of software that I’ve raved about before.
VirtualBox是Sun的(不久将成为Oracle的 )虚拟机仿真器，用于Windows，Linux和Mac OSX。这是我之前赞过的出色软件。
Despite competition from Windows 7 and it’s XP Mode, I still use VirtualBox for testing browsers and software. The open source product beats Microsoft’s Virtual PC by a considerable margin and compares well with VMware.
尽管与Windows 7和XP Mode竞争，我仍然使用VirtualBox来测试浏览器和软件。 开源产品在很大程度上击败了Microsoft的Virtual PC，并与VMware相提并论。
VirtualBox 3.1 was released at the end of November and 3.1.2 appeared a couple of weeks later. There are a number of updates that are of interest to web developers.
VirtualBox 3.1于11月底发布，而3.1.2则在几周后出现。 Web开发人员关注许多更新。
VirtualBox has always been fast, but 3.1.x improves the speed even further. Although I’m fan of XP Mode, it can be just as quick to cold boot an XP VM and start IE. The OS and browser are far more responsive than Virtual PC too.
VirtualBox一直非常快，但是3.1.x进一步提高了速度。 尽管我是XP Mode的粉丝，但它可以像冷启动XP VM和启动IE一样快。 操作系统和浏览器也比Virtual PC响应更快。
Hardware enthusiasts will be pleased to know that VirtualBox supports even more devices than before, can simulate up to four processors, and utilize 2D/3D acceleration.
硬件爱好者将很高兴知道VirtualBox支持的设备比以前更多，可以模拟多达四个处理器，并利用2D / 3D加速。
Teleportation, or live migration, is facility which allows you to move a live and running VM from one host machine to another. The demonstrations are impressive and it’s undoubtedly clever, but I’m not sure I’d find a reason to use it. In theory, you could use your VM desktop at work, transport it to a smart phone, then transport it to your home PC. You’d retain the same OS and applications throughout.
远程传输或实时迁移是一种使您可以将正在运行的虚拟机从一台主机移动到另一台主机的功能。 演示令人印象深刻，而且无疑很聪明，但是我不确定我会找到使用它的理由。 从理论上讲，您可以在工作中使用VM桌面，将其传输到智能手机，然后将其传输到家用PC。 您将始终保留相同的OS和应用程序。
I suspect the facility will be useful for enterprise systems administrators, but perhaps it’s viable for application demonstrations or user support.
我怀疑该功能对企业系统管理员很有用，但对于应用程序演示或用户支持来说也许可行。
VirtualBox has supported virtual machine (VM) snapshots for a while. However, until version 3.1, it was only possible to revert back to a previous state — and that destroyed snapshots lower in the hierarchy. VirtualBox 3.1 introduced branched snapshots which allow you to create any number of VMs from a single root image.
VirtualBox支持虚拟机(VM)快照已有一段时间。 但是，直到3.1版之前，只能恢复到以前的状态-并且销毁快照的层次结构较低。 VirtualBox 3.1引入了分支快照，使您可以从单个根映像创建任意数量的VM。
Branched snapshots offer significant benefits to web developers and I’ll show you how to use them in my next post.
分支快照为Web开发人员提供了显着的好处，我将在下一篇文章中向您展示如何使用它们。
Do you use VirtualBox? How does it compare to other virtual machine solutions?
您是否使用VirtualBox？ 与其他虚拟机解决方案相比如何？
翻译自: https://www.sitepoint.com/virtualbox-31-new-features/
