In reply to Ron Warnick.

WPSiteSync was designed to migrate isolated content rather than the entire database. If you are looking to move a huge amount of content, there are great full website migration tools out there to do that. However, if you are looking to only sync one or a few blog posts at at time, WPSiteSync is perfect for that task. In that case, more than 8,000 blog posts is not a performance issue.