I had asked this a couple of years ago but I am asking again because it seems like with sharepoint 2013, best practices may have shifted. We will be rolling out sharepoint and want each department to have their own site for file sharing and collaboration. Within each site there might be subsites for projects, etc. Is it best to create a site collection for each department or just one site collection and sub sites for each department?
A few departments have quite a few files and it seems like its only possible to set quotas for a collection, not a sub site.......