Question about the architecture

[Alen]

Hello,

I'm seeking advice about what the optimal setup is.

We have around twenty NAS worldwide that need a central point of monitoring.

1) Should we setup multiple freeradius servers worldwide connecting to a single central database?
2) Or should we setup a single central freeradius server (sitting close to the database) and make all the twenty NAS connect to the central freeradius server instead?

Thanks,
Alen