How much RAM do I need if my website is getting about 5000 unique visitors a day? I am using the media plugin as well, but my web host just told me I've run out, I was on 2gb
Get a dedicated server with around 8 gb of ram as the main server hosting the site and get another one with more [16 GB can handle it] specs or more as the file server and you'll be all good!
At the end, it all comes down to how optimized your server is.
It doesn't when you have enough users!
What I recommend it of you are just starting out, get a single dedicated server with 16 gigs and setup everything on it. This will be fine till you have around 500 visitors a day.
Ok, well my script and files are all on one 24gb server at the moment, what's the best way to move just the script to a new server and keeping the website working