3000 Members in 15Min. Period
 

I'm not sure if this is a repost since I did not research.

1) Can vBulletin (ver. 3) handle smoothly with 3000 current members online at once?

2) If I were to have 1000 members on a daily basis, can someone give me an estimate of how much space and bandwidth it will take on a month?

3) How exactly should I prepare myself as an admin for such environment (3000 members)??

It can handle nearly anything. However, your hardware would need to handle it, too.

It's not possible to accurately or even closely guess bandwidth/storage for a forum.

For hardwares, what would you run with on such environment?

And for the admin of vBulletin.org, how much bandwidth and storage did the site use on a peak month?

You'd need a very powerful dedicated server which would, I'm assuming, cost upwards of several thousand dollars a month.

You would probably need several :) One to host the database, and the other for the actual vBulletin software. wht has 2 quad xeons running their forums (one setup for mysql and the other for simply vB itself).

You'd need someone very talented and knowledgable to tweak the servers up beforehand as well :) I think with 3000 users online that might struggle a bit as well (may have to split the database in 1/2 onto two servers). vBulletin can handle it, it's just you need enough grunt behind it.

Yeah, you'll need at least 4 servers if not more for that sort of load. There are not many forums with that much traffic though.