Virtual appliance is pre-installed, preconfigured, ready to use applications and software those are ready to run on the operating system in the virtual machine. Virtual appliance fundamentally change the development, distribution and management of enterprise software. So-called Independent Software Vendors develop their applications only for a platform and reduce the cost and complexity of software development and product management. Software vendors expand their virtual appliance efficiently and safely in the OVF standard ( Open Virtualization Format ).
Areas of application of Virtual Appliance
Software to use as a virtual appliance facilitates the installation and management. Business software departments also facilitates the configuration and ensure availability of essential, so the cost can be reduced with the resources and effort.
VMware Infrastructure verifies the integrity of the virtual appliance automatically during the loading process to ensure that the applications have not been modified maliciously or accidentally. As the software manufacturer will need to update their virtual appliance to fit it to centralize system and reduce their costs for customer service and maintenance programs.
Users also benefit from Virtual Appliance due to higher availability and less time required for installation, configuration, upgrade, troubleshoot, and manage applications. Since the Virtual Appliance play in the central data center to manage, companies can also be sure that the applications and data are secure against intruders. In addition, the Virtual Appliance can be quickly, reliably and quickly spread worldwide and put into operation.
Benefits of Virtual Appliance
Easier distribution of enterprise applications through Virtual Appliance : As the software applications are preinstalled and preconfigured, an operating system and include packaged in an executable format, Virtual appliances eliminate complex, expensive, tedious and error-prone installation and configuration processes. Simple distribution mechanisms offer great advantages in the distribution of new software versions and applications to remote offices and branch offices.
Simplified error correction and update with Virtual Appliance : Virtual Appliance support the distribution of error corrections, which are shipped directly from the software manufacturer. Any improvement or modification of Virtual Appliance is managed directly by the software producers.
Easier management through Virtual Appliance : Through the use of production-ready virtual appliance on virtual infrastructure users do not need to worry about their dependence on software-management programs and use a third-party.
Portability and operating system independence : OVF formatted Virtual Appliance provide a high degree of flexibility on the user side, the business software used.