Clustering is the correct answer.
clustering
It is technique to reduce the server load and www4 simply means there are multiple servers.
MULTITASKING!! Multitasking Another technique that helps servers use their system resources more efficiently is multitasking, which is the execution of multiple tasks at one time
redundancy
yes.
NAT devices can hide IP addresses of internal servers; PAT devices ensure that services run on internal servers via a single IP address with multiple ports
You can't run multiple servers on one port. Open the server.properties file of one of your servers, and change the value of server-port to something other than the default (25565).
The best way to maximize the space on the application server by clustering the servers is grid computing. You can read more about it at http://www.oracle.com/technologies/microsoft/docs/grid-computing-windows.pdf Clustering allows you to run multiple services on one machine or on multiple machines. Servers can be arranged to maximize space with multiple servers running.
In computing, "to cluster" refers to the act of grouping together multiple computers or servers to work together as a single system. This can improve performance, scalability, and reliability by distributing the workload among the clustered units.
No!
A computer rack is a frame or shelving unit that is usually made of metal. It is used to hold different pieces of computer equipment such as servers, hard disk drives and modems.
It is called virtual hosts, and it is supported by Apache.