In order to parallelize downloads, i created already a subdomain for images. images.mydomain.com
Now, i don't know how to move my media files, without breaking attachments, and after that, in the future, how to automatically store media file in subdomain.
Eventually, what i was thinking of doing was something like , redirect images.mydomain.com to mydomain.com/wp/content/uploads and after that replace all strings 'http://www.domain.com/wp-content/uploads/'with'http://images.mydomain.com/' using the wordpress plugin "search and replace".
Does someone believes to know how to get around this?
thanks in advance