We all know that virtualization is the biggest wave in computing ever occurred. Many organizations are adopting virtualization as a preferred choice for computing and infrastructural environments. Virtualization itself is emerging with new trends everyday.
In this post we will walk through one of the interesting virtualization technique called as Virtual Appliance.
What Wikipedia Says of Virtual Appliance:
Virtual appliances are a subset of the broader class of software appliances. Like software appliances, virtual appliances are aimed to eliminate the installation, configuration and maintenance costs associated with running complex stacks of software.
A key concept that differentiates a virtual appliance from a virtual machine is that a virtual appliance is a fully pre-installed and pre-configured application and operating system environment whereas a virtual machine is, by itself, without application software.
Typically a virtual appliance will have a web interface to configure the inner workings of the appliance. A virtual appliance is usually built to host a single application, and so represents a new way of deploying network applications.
As an example, the MediaWiki software that powers Wikipedia is available as a virtual appliance. This appliance contains all the necessary software, including operating system, database and MediaWiki, to run a wiki installation as a “black box”.
Here are some useful links which can be useful to you:
- Wikipedia Page.
- VmWare’s repository of Virtual Appliances
- Linux.com :: A virtual appliance primer
- Virtual Appliances Home