Number of nodes

Increasing the number of nodes in the cluster allows for higher concurrency. While performance gains might not be linear, adding nodes allows for a higher number of users and applications accessing the volumes.

The goal is to have enough nodes for a balance in the available space and concurrency. There is no set number here, but your job as an architect is to define, through testing, what is the right number of nodes for a specific solution. During the POC phase, test with a smaller number of nodes and check whether the performance is acceptable.