The objective of scalability test is to ascertain:
- Does the system handle more loads when more hardware resources are added?
Scalability testing involves, changing the hardware configuration, software configuration and comparing the load the software can handle against each configuration. This should be planned and executed in a systematic manner to ensure that all relevant information is collected. The parameter by which load is increased obviously depends on the type of application.
Scalability is the ability to allow the business to support more operations in the future by simply adding hardware.
..More „Boxes‟
..More CPUs
..More Memory
..More Bandwidth
Systems do not scale infinitely, there is a point above which adding anymore hardware is not useful. This point is known as “knee point.”