Scalability: Scale-Up

Supports both vertical and horizontal scaling, providing flexible options for expanding resources when needed.

Intro 

Nowadays, the amount of data that businesses accommodate and use is growing exponentially. Also, in most cases, the production workload is not static, meaning that businesses, most likely, deploy new applications to improve the current environment and drive business growth. Therefore, more CPU and RAM resources are needed. Most solutions on the market are scalable, but how to understand the best approach in your case? 

Problem 

Every approach has its own limitations, whether it be hardware or software limitations. The Scale-Out approach allows you to overcome the limitations of the hardware in single/multiple servers, forming a scalable cluster. However, Scale-Out approach also increases CapEx that might be over the budget. 

Solution 

In this case, Scale-up is a preferred way to increase storage, networking, or compute powers for the existing StarWind High Availability clusters. With this approach, you can add, upgrade, or replace networking, RAM, CPU, and storage w/o interruptions for business operations thanks to real-time replication provided by StarWind VSAN. 

Scale-Up allows you to scale vertically without the need to add another node to the cluster as long as your physical hardware allows it. Scale-Up also allows you to scale independently from other components in your cluster, for example, by increasing only RAM capacity while you have plenty of other resources available, you can achieve your goal of expansion with lower CapEx. 

Conclusion 

StarWind VSAN gives you freedom of choice about how exactly you want to scale your system by being able to support both Scale-Up and Scale-Out. By the end of the day, it is your system and your choice of how exactly you want it to serve you and your business.