Just what are clustered web hosting servers?

Clustered web hosting servers is a type of service which involves a number of servers performing the same task this is much more reliable and efficient then shared hosting options. With this service the servers are load balanced spread equally across each server so that the best redundancy is achieved.

Downtime is very little with clustered servers if any, as when one server fails another is already running to keep the website running smoothly. The only downtime would be caused due to power failures or data center problems, generally not hardware.
Clustered server hosting is for businesses or coperations where they require near to 100% uptime.