No.

ObserveIT is not scalable and it's not for the medium to large corporations. It's for smaller environments. For the larger corporations, we have other scalable solutions, and at the moment I think the usual pattern to address the UEBA is defining or directing the use cases.

I didn't have any big scalability issue on production systems. I had some problems with an instance of ObserveIT in a Proof of Concept, when I installed ObserveIT with an SQL Express instance and the DB used all provisioned space. The solution was to use the DB to store metadata and keep the recordings on the file system.

We didn't use the scalability.

I haven't tried to scale it.