user manager, radius and disk usage

Hi
I have a master mikrotik (2.9.50) in a 256 MB card flash, actually runs 2 hotspot in the same machine (5 users) and 3 more hotspot in proyect in remote mikrotiks, the master mikrotik works as a Radius server and does authentication and control of the Hotspot users. I need to know if the 256 MB will be sufficient to store the radius data (for example for 100 users), or the best is to install a external radius server.

Thanks in advanced

Zaterio

256 MB is very sufficient for 100 users, there should not be any problems.