[Koha] Question concerning Koha setup, it may be stupid but please show your brilliance

[Erik Lewis]

Hi,

We are looking at gearing up for Kohacon in preperation for the Koha  
conference and for possible implementations.  In doing so I've got a  
few basic questions.


I understand that Koha is essentially 2 parts an Apache application  
server and a MySQL database server.  I also understand that some  
libraries run a seperate application server for staff access and one  
for patron access.  If I'm not mistaken you can run these on different  
machines as well.

1)  Is there any problem mixing Application servers with the Database  
server.  Example a Mac serving MySQL and either Windows, Mac, or Linux  
App servers?
2)  Any upper limit on the number of App servers?
3)  Where does the Zebra indexing live?
4)  What are the pitfalls of having the Database server on a separate  
server?