[Rdo-list] Glance Active/active and the data store

Hello, We are in the middle of scaling out our OpenStack management services like nova, keystone etc. We do it with haproxy with two active/active servers (mgmt1 & mgmt2) which are hosting the API endpoints. Now the question regarding glance, at the moment we have a full glance installation on mgmt1 with the data store on the local file system. What is the best approach to scale out glance without having doubled images? Cheers Chris