[Observium] Scaling Observium with Rancid, Smokeping, and Syslog-ng

Anyone have suggestions or real world experiences they could share scaling Observium with Rancid, Smokeping, and Syslog-ng. I have about 1000 router/switches in my network that equate to about 30k of interfaces. Half the interfaces will probably be down, although I'm not sure that makes a difference.

Basically I'm wondering if I should break out my tools to individual VMs and use something like NFS for Observium to be able to see Rancid,Smokeping, and Syslog-ng data. Feel free to shoot me a private note. I appreciate any feedback.

-Chip