Learn about virtualization

Enterprise Email Hosting

Guru-host is now offering a wide range of Zimbra hosted packages based on latest Zimbra Collaboration Suite. With Zimbra you will be able to sync in real time your mobile phone no matter it's Operating System, share documents, write online documents and many many other interesting features available only on Zimbra. Squirrelmail, Gmail, Horde and other IMAP clients are a way behind Zimbra. Contact us to setup a demo account for you. Pricing details along with usuful information about how Zimbra works can be found under http://guru-host.eu/en/Zimbra.

Guru-host goes to Centos.org

We are thrilled to announce that Guru-host.eu is a sponsor of CentOS project.
A new repository with 100Mbit Internet Connection on Dual Core Xeon CPU will be available to all our customers along with European citizens. This will server data much faster than the US repositories. Guru-host customers will be able to update their CentOS servers without calculating traffic (bandwidth) as the server is running inside our core network. CentOS is 100% compatible with Redhat Enterprise Server.

Network Storage up to 8TB per customer

We can now deliver iSCSI storage on our enterprise class Storage Area Network (SAN) which is based on the industry leading Lefthand Networks platform from HP.

Learn about virtualization

Learn more about the virtual private server technology A virtual private server (VPS, also referred to as Virtual Dedicated Server or VDS) is a method of partitioning a physical server computer into multiple servers such that each has the appearance and capabilities of running on its own dedicated machine.
Each virtual server can run its own full-fledged operating system, and each server can be independently rebooted.
The practice of partitioning a single server so that it appears as multiple servers has long been common practice in mainframe computers, but has seen a resurgence lately with the development of virtualization software and technologies for other architectures.

The physical server boots normally. It then runs a program that boots each virtual server within a virtualization environment (similar to an emulator). The virtual servers have no direct access to hardware and are usually booted from a disk image.

There are two kinds of virtualizations: software based and hardware based. In a software based virtualization environment, the virtual machines share the same kernel and actually require the main node's resources. This kind of virtualization normally has many benefits in a web hosting environment because of quota incrementing and decrementing in real time with no need to restart the node. The main examples are Xen, Virtuozzo, Vserver, and OpenVZ (which is the open source and development version of Parallels Virtuozzo Containers).

In a hardware based virtualization, the virtualization mechanism partitions the real hardware resources. In typical implementations, no burst and/or realtime quota modification is possible; the limits are hard and can only be modified by restarting a virtual machine instance[citation needed]. This kind of environment is potentially more secure in the sense that it is less subject to "Quality of Service crosstalk" between VM instances[citation needed]; on the other hand, its security is typically dependent on the correctness of a larger and more complicated Trusted Computing Base[citation needed]. It is more commonly used in enterprise/commercial deployments[citation needed]. Examples include Microsoft Virtual Server, VMware ESX Server, and Xen.

Posted on: 24/07/2009

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