# File lib/deltacloud/drivers/ec2/ec2_driver.rb, line 512
        def create_storage_volume(credentials, opts=nil)
          ec2 = new_client(credentials)
          opts ||= {}
          opts[:snapshot_id] ||= ""
          opts[:capacity] ||= "1"
          opts[:realm_id] ||= realms(credentials).first.id
          safely do
            convert_volume(ec2.create_volume(opts[:snapshot_id], opts[:capacity], opts[:realm_id]))
          end
        end