Hardware Architecture Question

[John White <jwhite@xxxxxxxxxxxxxxxxx>]

If you are serving up lets say IMAP Directories and Websites from 
GlusterFS, is it more beneficial to have many smaller 1U servers with 
big drives and perhaps a replica count of 3 or 3 large storage boxes? 
Does GlusterFS benefit from this approach at all?

Also what are considerations for CPU/RAM?  Is there a threshold on 
RAM/CPU where obviously another brick is in order rather than upgrading 
hardware?

I apologize for the naivety, just getting familiar with GlusterFS and 
how it utilizes resources.

Thanks,

John