alexmunte, a lot of your questions you are asking have been compiled in the FAQ below
Key things
- Orion server + FSDB server must be both 64 bit
- 3 servers ideal (1 for Orion server, 1 for FSDB, 1 for SQL). If that's not possible, don't mix FSDB and SQL on the same server. FSDB and Orion server on same machine is OK provided you separate the storage channels and increase your system resources