Hi Onmestester,
A few comments inline:
>
> 1. I'm using the real schema + > 3 nodes cluster
>
Since you are only interested in data usage, for simplicity, you could use
a single node cluster (your computer), and use RF=1. If your production
cluster will use RF=3, you will just need to multiply.
I was going to estimate Hardware requirements for a project which mainly uses
Apache Cassandra.
Because of rule "Cassandra nodes size better be < 2 TB", the total disk
usage determines number of nodes,
and in most cases the result of this calculation would be so OK for satisfying
the required
