Multiple web servers

[prashman]

Hi,

I'm hosting vbulletin in the cloud where web servers are auto scaled. But there are certain features of vbulletin that I'm concerned about like avatar, images, smileys etc. that are uploaded using the admin pages. When there are multiple web servers, obviously these will get uploaded to one server. Anything stored in the database is fine because there is only one.

How do we get around this problem? Are there any other vbulletin features that can cause web server file system to be updated? I believe that session management is done on the database and not by files which is good.

Can the users do anything that can cause web server file system to get updated? (image upload, profile pictures etc) Or do these get stored in the database?

Is there a documentation page on hosting vbulletin on multiple web servers?

Thanks.