I have a website that's currently on a shared server plan. It's been working fine. In about a week, I'm expecting a spike in traffic during a specific 4-day event. I could have as many as 1000 visitors at one time on my site. My site is basically a phpBB 3.0 forum. I'm not sure what would happen with such a spike. Would the server crash or would access to the site slow to a crawl?
My host is offering to switch me to a VPS or dedicated server for a month. I'm not concerned about the cost. I've never done this before. I'm concerned that the transition won't go smoothly and my website won't work on the new server (VPS or managed dedicated), without troubleshooting my code and making changes.
My website is on a shared server that uses cPanel. Not sure if this makes the transition to a VPS of dedicated seamless and reliable. I would appreciate some insight and advice on what to expect in this type of transition.