Parallels Virtuozzo Containers
Parallels Virtuozzo Containers is an operating system virtualization solution that harnesses the full power of your IT infrastructure by increasing the utilization of existing servers by 2X–3X over hypervisor solutions. With today’s lean budgets, higher utilization of your existing servers represents cost savings not only in maintenance and energy costs but also from the potential elimination of new server expenditures.
Virtualization at the host operating system provides a lean, efficient virtualization layer that enables higher density ratios of virtual servers to physical servers along with complete isolation between workloads. This isolation allows multiple workloads to exist across business silos without one workload affecting the performance and security of any other.
Other features of Parallels Virtuozzo Containers include:
Small footprint of virtual servers and lightening fast management operations
Dynamisches Ressourcen Management
Automatic or administrator-defined control over system resources
Centralized management of virtual environment
Live Migration (Linux version only)
Move containers while up and fully functioning
There are two types of virtualization on the market today. Hardware virtualization, or hypervisor, virtualizes at the hardware level creating a duplicate of all system resources such as operating system, CPU, memory and configuration files. This makes the common point of reference the hardware.
Multiple copies of system resources results in overhead on the server of up to 20%. Overhead reduces the ratios of virtual servers per physical server as well as overall system performance.
Virtualizing at the host operating system, Parallels Virtuozzo Containers provides a common virtualization layer that allocates system resources across all virtual servers, called containers. The result is a leaner, more efficient virtualization layer with an overhead of only 2%. This translates into higher ratios of virtual servers to physical servers, near-native server performance and unique advantages for management of the virtual environment. Some of these advantages include dynamic reallocation of resources and the ability to create links back to the server host operating system creating lightening fast management operations.