[consulting] Drupal server requirements

[Clara Hurst]

Hi folks,

We are writing a proposal for a client site with potential of  100,000 
unique visitors per months.  The registered site users can be ranging 
from a few thousands to 10,000.   However, we expect at any given time 
there might be only up to a couple hundreds active users logged in,  the 
activities that the logged in users will do will mainly be:  posting 
content, private messaging/contacting each others and downloading some 
white papers from the site etc.   We will use Organic Groups module so 
user roles are controlled via OG, we will also have multi-lingual 
support in the near future.

We have not built any large drupal sites before, although there are some 
posts on the drupal.org but still feel very unease in terms of coming up 
with a set of server capacity requirements, any pointers or suggestions 
will be greatly appreciated. We are thinking of the following dedicate 
server configuration as a start, are we on track or too far off?

- Intell 3.2 GHz P4 processor
- 2GB RAM
- plenty disk space
- RAID 1 for redundancy


Thanks
Clara Hurst