What is a virtual environment (VE)?

Virtuozzo is an Operating System Virtualization solution so a different naming convention was used to differentiate between Virtuozzo and the virtual environments of hardware virtualization. A VE is just another term for a virtual server.

How long will it take to install Virtuozzo?

Virtuozzo is easy to install. Virtuozzo for Windows is loaded out of the box in less than a half hour by an administrator with basic networking skills. No Linux skills are required for Virtuozzo Windows. Virtuozzo for Linux may be installed in under an hour by a Linux administrator.

How difficult is Virtuozzo to use?

Virtuozzo is designed from the ground up to be simple and intuitive to use. The management tools hold much consistency between platforms, further increasing the simplicity by standardizing tasks between Linux and Windows platforms. The management tools also make managing software versions and patch management a breeze, with simple ways to clone and test patches and efficient tools to disseminate patches.

How difficult is Virtuozzo to deploy?

Virtuozzo is simple to deploy. As with all virtualization solutions, there is a migration process between physical and virtual machines. To ease the process, there is a Physical to Virtual tool for Linux (VZP2V) which includes testing processing peaks and valleys prior to migration to ensure performance levels are maintained.

If a guest Virtual Environment crashes, will it affect other servers or the host operating system?

No, all of the transactions accessing the host kernel are mediated through the Kernel Abstraction Layer. Crashes are limited to the specific virtual environment.

How scalable is Virtuozzo?

The Virtuozzo architecture was designed to be extremely scalable so that every virtual private server can utilize the entire or available resources on the server. Any guest VE can utilize up to 16 CPU and 64 GB of memory.

Are Virtual Environments secure?

Yes, the proprietary virtualization layer manages the isolation of namespaces, users, processes, network management to ensure that only users with appropriate access may access a virtual environment.

What is the recommended density of virtual environments on a single physical server?

The density range completely depends upon the resources of the server, the contents of a particular VE and finally the desired amount of VEs tied to a single piece of hardware. The two most critical resources that enable virtualization are CPU and RAM. The more available processing power, the fewer requirements to offload processing to virtual memory. Virtuozzo for Linux can achieve a density of 100 VEs with minimal content and applications on a 1.46 GHz, 1 GB RAM and 36 GB hard drive. Virtuozzo for Windows is slightly more limited because the Windows operating system itself takes a large chunk of the available memory.

How much overhead should I expect with Virtuozzo?

Virtuozzo adds very little to native applications and operating system performance, ranging from 1-3%. The server and application performance difference with Virtuozzo is generally imperceptible.