There is no simple answer to this question.
As your Confluence grows, it will need more resources, but there is no formula to just give you numbers you can feed into hardware specs. Number of pages and active (editing) users are the primary things to thing about, but those can easily get massively outweighed by readers if they happen to be doing lots of searches. Sometimes.
If you want a good answer, you will need to monitor your own usage and performance to see what is best for you.
I've seen Confluences with a thousand users jump to DC because the performance is letting them down and DC will help, but equally seen people just add a bit more memory for the same number because it will work fine. I've got one site that has a server that cost a fortune and runs Confluence like an absolute dream ten times faster than a massive DC install simply because the hardware is better.
If you can keep throwing resources (i.e. money) at a Confluence server, it's going to improve. But there is a line where DC simply becomes better in general. Where that line is very much depends on what you're willing to spend on a spectacular server instead of 2/4/8 much cheaper nodes.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.