I'm using the Cloud Files module which uses the Rackspace Cloud Files PHP API to store all uploaded files on Rackspace Cloud Files (a CDN). It all works very well.
However, today, Rackspace itself had an outage related to their API and it caused my entire site to break. I absolutely can't have this happen when my site is finally live. Is there any way to keep the files locally as well as in Cloud Files so that if there is a problem I can flip a setting in the admin pages and it'll start using the local files so that the site continues working while Rackspace works on the problem?