Scale Up vs. Scale Out
Scale up and scale out are two storage solutions that utilize different approaches in adding functionality and capacity to hardware.
What Is the Difference Between Scale Up and Scale Out?
The scale-up model or vertical system utilizes a fixed number of controller resources, along with several brackets of drives. As space runs out, you simply install another drive for additional capacity. However, it is limited in the sense that it could never go beyond the maximum capacity of the storage controller. Scale out, meanwhile, uses a clustering approach, and by bundling different nodes together, you can distribute the workload and so you can run data through multiple channels. Scale out is also known as a horizontal system.
What Are Scale-Up and Scale-Out Storage?
Vertical scale-up storage means boosting your main server’s capacity by adding processors, RAM, drivers, and disks. There are some advantages to this approach, including maximizing the use of your current hardware, limiting your energy consumption, while scalability is quite straightforward.
Horizontal scale-out storage, meanwhile, will replace your hardware to scale capacity, performance, and functionality. Scale out is supposed to be the natural progression of scale up because it addresses some of the latter’s limitations. For instance, you break the capacity restrictions of the controllers, resolve latency, boost uptime, and prepare your storage environments if you want to scale again in the future.