Welcome to the Q&A Forum

By all means move the old content to a "archive" sub domain, but if you want to redirect to the new content you should ensure that the "archive" subdomain is set to noindex, nofllow. A 301 redirect is the best method to ensure indexing factors get passed to the new URL but should only be used if the old pages have been removed form the index, so as well as making the old pages noindex, nofllow make sure you use the URL removeal tool in WMT or update your sitemap. "Also for the active events, is there any difference between: _redirecting the old page to the archive page and then forwarding to the equivalent on the new page _ and redirecting the old page directly to the new page" What is best for user? Presumably the new pages have new content, if so you should redirect to them. N

Thanks Mike, that clarifies it. I should have found that  FAQ my self