Comparison of Linux virtualized server and KVM-based virtualisation

This section looks at the two root server techniques used by Linux-vServer and KVM, highlighting their key differences and common features.

As a full virtualisation solution, KVM offers the feature set of a dedicated server. Linux-Root Server, on the other hand, is based on "container virtualisation", whereby users cannot install their own kernels (for example).

Features	Linux-vServer	KVM
Server selection	Select	Select
Guaranteed CPU performance Current CPU performance can be used at least.
Guaranteed RAM We guarantee you a fixed RAM, which is available to the root server/KVM-based root server. With our root servers, we rely solely on ECC RAM.
Flexi SSD RAM If no more free physical RAM exists on the node, additional flexible RAM on the SSD hard disk is realized.
Custom SWAP You can freely determine the amount of the SWAP spaces.
Guaranteed CPU core You get the guaranteed allocation of CPU cores for your root server / KVM-based root server.
Snapshots during operation You can create snapshots of your system without taking the system offline and can rely on this if necessary. The snapshots are stored on the hard disk of the root server / KVM-based root server.
Backup on external storage space You can save your data to external backup storage and restore your backups when you need to.
Rescue system The rescue system can be used to access the file system without needing to boot the root server.
At least RAID 50 We offer you hard disks, which are connected together via RAID50. This increases availability and failover protection for your data. In addition, the parallel use of multiple hard disks makes a huge difference to access times.
/64 IPv6 subnet At the root server / KVM-based root server you will receive a full / 64 IPv6 subnet.
Web VNC console You can view the monitor output of your root server / KVM-based root server by using a web browser via VNC console.
Virtual Keyboard You can make keyboard input on your root server via a virtual keyboard.
CD-ROM drive You can insert an ISO image of any CD-ROM or DVD in the drive of your KVM-based root server via FTP. It can also be booted from the CD-ROM / DVD.
Custom images Upload your own images via FTP to our image server. Only you have the access on the images. You can install these images on your KVM-based root server.
Installation via CD-Rom You can install an operating system from a CD-Rom or DVD on your KVM-based root server. You can display the screen output via web VNC console. On this way it is also able to make monitor input.
Installation custom images Images that have been uploaded by yourself can be install.
Firewall via Web interface You can set firewall rules for your root server by web firewall.
Firewall via IP tables In Linux, you can set firewall rules for your KVM-based root server via IP tables.
Custom kernel installable Own kernel are installable. Linux, BSD, or Windows - it is your free decision which operating system you want to use.
Custom kernel configurable You can also influence the settings of used kernel.
Suspend- / save mode A KVM-based root server can be stopped. The entire contents of the RAM can be saved on the hard disk. The KVM-based root server continues to run on the same status, on which it was stopped.
Web interface for administration Administrate your root server / KVM-based root server with a web interface. You can import other operating systems, stop or start the root server, see statistics and much more on the web interface.
Traffic for free We do not charge you for data transfer to and from your website.