I am a system integrator, and my customers are using EXAScaler as the de facto parallel file system for Google Cloud. They primarily use it for large AI cluster training.
Pros
"EXAScaler provides amazing performance in terms of sequential read and random access, and it has a significant scalability advantage as it is scalable to petabytes."
Cons
"One challenge with EXAScaler is during upgrade time, as it can be problematic when upgrading node by node."