Not a total expert in the nuances, but I believe that Scaling up would be like changing out your 1TB hard drive for a 4TB. Scaling out would be the ability to add more units. read more
To make informed buying decisions, IT pros need to understand the difference between scale-up and scale-out. The following are the basics, which can be built upon for more detailed considerations. Scale-up, as the following simple diagram shows, is taking an existing storage system and adding capacity to meet increased capacity demands. read more
NAS options: Pros and cons of scale-out and scale-up Traditional NAS comprises one or two controllers, or NAS heads, and a pre-set amount of CPU, memory and drive slots. Once the NAS device reaches its limits, the user needs to buy a new, separately managed system to boost capacity and performance. read more