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2005-10-19 09:37:53
Distributed computing environments, often need to deploy similar or identical servers at multiple locations. These environments include ISPs, geographically distributed sales offices, and telecommunication service providers. Servers in a distributed computing environment might provide some of the following services:
Router or firewall services
Email services
DNS caches
Usenet (Network News) servers
DHCP services
Other services best provided at a variety of locations
These small servers have several characteristics in common:
High-reliability requirements
High-availability requirements
Routine hardware and performance requirements
Note–Do not configure similar software and hardware devices. For example, do not build software RAID-1 volumes on top of hardware RAID-1 devices. Configuring similar devices in hardware and software results in performance penalties without offsetting any gains in reliability.
