One SVN repository or many?

Question

If you have multiple, unrelated projects, is it a good idea to put them in the same repository?

myRepo/projectA/trunk
myRepo/projectA/tags
myRepo/projectA/br         


        

Answer 1

one additional thing to consider is the fact that using multiple repositories cause you to loose the ability to have unified logging(svn log command) this alone will be good reason for choosing single repository.

I use TortuiseSvn and found that the "Show Log" option is a mandatory tool. although your projects are unrelated, I'm sure that you will find that having a centralized global cross-projects information (paths, bug ids, messages and so on....) is always useful.