Linux cluster

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.

Linux cluster

A computer cluster is a group of linked computers, working together closely so that in many respects they form a single computer. The components of a cluster are commonly, but not always, connected to each other through fast local area networks. Clusters are usually deployed to improve performance and/or availability over that provided by a single computer, while typically being much more cost-effective than single computers of comparable speed or availability

High-availability (HA) clusters

High-availability clusters (also known as failover clusters) are implemented primarily for the purpose of improving the availability of services which the cluster provides. They operate by having redundant nodes, which are then used to provide service when system components fail. The most common size for an HA cluster is two nodes, which is the minimum requirement to provide redundancy. HA cluster implementations attempt to manage the redundancy inherent in a cluster to eliminate single points of failure.

There are many commercial implementations of High-Availability clusters for many operating systems. The Linux-HA project is one commonly used free software HA package for the Linux OSs.

Load balancing clusters

Load-balancing clusters operate by distributing a workload evenly over multiple back end nodes. Typically the cluster will be configured with multiple redundant load-balancing front ends.

Grid computing

Grids are thus more like a computing utility than like a single computer. In addition, grids typically support more heterogeneous collections than are commonly supported in clusters.

Linux cluster

Grid computing is optimized for workloads which consist of many independent jobs or packets of work, which do not have to share data between the jobs during the computation process. Grids serve to manage the allocation of jobs to computers which will perform the work independently of the rest of the grid cluster. Resources such as storage may be shared by all the nodes, but intermediate results of one job do not affect other jobs in progress on other nodes of the grid.

An example of a very large grid is the Folding@home project. It is analyzing data that is used by researchers to find cures for diseases such as Alzheimer's and cancer. Another large project is the SETI@home project, which may be the largest distributed grid in existence. It uses approximately three million home computers all over the world to analyze data from the Arecibo Observatory radiotelescope, searching for evidence of extraterrestrial intelligence.

Posted on: 24/07/2009

Back to Home page