Disk Space Usage Requirements?

Hi new to librenms and was wondering what the disk space usage requirements are like over the long term i.e. 12 months for say at least 25, 50 or 100 servers to be monitored ?



Size on Disk: 56.0MB in 119 RRD files.
For one server monitored for 2 months with 2 extra apps monitored (os-updates and nfs-stats).