Minimum Drive space for Windows 2003 Webserver

[TechBoyJK]

I'm building a server to host a single site, which will be hosted in our datacenter.

My question is, I'm installing Windows 2003 Webserver Edition (along with blue dragon for cfml processing).

THe current rig I'm developing on only has a 9GB drive. The most space I've ever used is just under 4GB.

The new box I'm building, which will be for the production version of the site, I'm thinking of using dual 9GB drives in a raid 1 array. I could also use 18GB drives but I have 5 times as many 9GB drives as I do 18GB drives, so I'd rather use the 9GB drives.

Being that the dev box never saw any production traffic, I can't honestly think the system will behave the same way. Not as many logs, etc.

The site itself only takes up about 100MB, since its just all code and a few graphics.

Does anybody have any reasons why I should use more than 9GB of space for the OS and only partition in the server? I'd like to use these 18GB drives elsewhere.

 

[Snapster]

The things I can think of:

Logs
error /pc health reports
Windows updates (this is a PITA when it comes to service pack)
Windows\Installer and Software Distribution folder (If you install/un-install lots of stuff this folder grows, transactional file replacement etc)
System Volume Information file
Page file
Microsoft.Net folders (if you have this installed)

Windows does need some room to breathe to work 100% normal otherwise it'll be doing allot more swapping and you'll get more hangs out of this.

To give you an idea on size in a production environment over time, my 3 year old Win2k3 box has 6.23GB just in the Windows folder alone, if I added program files it would easily top over 9GB (Sql Server). Obviously it does allot more serving (20 sites, 10 MSSQL db's) than you intend. I'd say it is possible if you keep on top of where the space is going to (limiting log size, cleaning out regularly, deleting installed patch backups) etc, but it would be more of a headache.