Vertical and horizontal scaling simply explained

In this post we look at two terms throw about by systems architects and breakdown what they mean. Scaling vertically and scaling horizontally. Scaling Vertically Adding more resources to the existing server....

Clustering simply explained

What is a cluster? A server working by itself is simply just a server or single node. When you have two or more servers that are designed to do the same thing...

What is virtualisation?

When we traditionally talk about a server we’re talking about a physical computer having a operating system with one or more application/s. Virtualization allows us to separate the hardware (the actual physical...

RTO vs RPO

Recovery Point Objective (RPO) and Recovery Time Objective (RTO) are important elements which guide major decisions when designing the architecture for a system but what’s the difference between the two? Let’s take...

CIA Triad

This is a very important IT Security principal. Considering these 3 factors we can help guide the design of a system. Confidentiality How important is it that only people who are suppose to...