NTA 4.0 complete environment recommandations?

Hi,

we are planning a new NPM/NTA environment. At the moment NPM 10.6 and NTA 3.11 runs on the same server.

If I read the recommandations for NPM and NTA (with FlowStorage DB) then I need 3 physical and powerful servers. One for the Poller, one for the SQL-DB and one for  the Flow Storage.

I wonder if I can use the pollerserver also for the SQL-DB (separate RAID). The most DB traffic goes to the FlowStorage DB. In the SQL DB are only a few Meta-Data. Why I need a separate derver for the Meta Date stored in a SQL-DB.

We are planning with HP p-series. If "SolarWinds NetFlow - PDUs processed" in the Windows performance monitor is the right value, we have an average of 40.000 Flows/s with peaks of 120.000 Flows/s.

Thank you for your answers

regards

olaf