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At a simple level, a server cluster is just a number of normal dedicated servers linked together via a network to operate in tandem to run a particular application.
Every server cluster we setup for our clients is tailored to their requirements, and we would always engage in a dialogue with them to determine their requirements. As mentioned, a cluster is just an arrangement of normal servers and as part of it, if you rent more than two servers with us we will configure a private VLAN to provide secure gigabit communication between your servers.
If you think you need a server cluster please contact us to discuss your requirements. We are happy to offer a free sales consultation to help you work out what it is that you need, and would be delighted to provide a detailed quote.
Using our extensive experience in server clustering we also offer a
complete load-balancing and auto-failover solution called Performance Patrol™. This
system allows the load to be shared across multiple front-end machines
in a cluster and automatically manages the demand and re-routes
traffic in the event of a failure. More information here.
A typical common simple cluster is a standard Web front end & database backend pair. Take an e-commerce site, for example; there might be one powerful Dell PowerEdge PE2950 server with twin Quad-core Xeons server and lots of RAM heavily firewalled behind the scenes running MySQL, with a Gigabit VLAN to one or more PowerEdge PE860s with single Dual-core Xeons as the front-end web serving machines.
This configuration allows the load to be spread across the machines, and for each server to focus on a specific task. Adding more servers into the cluster allows the capacity of the server group to be seamlessly scaled, and allows for a fail-over capacity in the event of one machine developing a fault.