Wednesday, January 05, 2011

Availability != Scalability != Performance

Availability - the degree to which a system is responsive or in a state in which it is expected to be in

Scalability - property of a system to manage increased load as expected or the capability to be expanded to handle increased load

Performance - the speed or measure of the completion of a unit of work

Just some thoughts I had today about computer systems and what is important to end users. Redundancy should also be in place, but maybe it's not a concern for end users.