I'm hosting one site with it that gets a decent amount of traffic and has a fairly busy forum. The site gets about 8 million pageviews a month and the forums report there are usually around 500 members on within the last 15 minutes. I go through anywhere from 1200 to 1600 gigabytes of bandwidth a month.
I've been having problems off and on for a few months now and I've done a lot of optimizing but it still has been getting progressively more busy and lately has been getting a lot worse with the server load just going through the roof sometimes.... like this:
That always happens in spurts too. The site will run just fine for about 30 minutes and suddenly the load will take off and then gradually come back down after about 5 minutes of being that high.
Does anyone know if I should be able to run a site like I have with my current server and I just need to work on optimizing it better or is it time for an upgrade? I've thought about getting a load balanced pair and running mysql on one and then everything else on the other but it seems I remember reading something about how the traffic is limited to 10mbps between the two and I could run into a bottleneck. The other option above what I currently have is the monster series but they start at $1,000/month and I'm running this site with a limited budget.