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...

Why use N Tier Architecture?

In a previous post N-Tier Architecture we looked at what that was. Great we know what N-Tier Architecture is but what is it good for and why should you use it? Scalable Each tier...