The Dynamic Storage Technology (DST) quotas management system is a unified quotas management system that allows you to manage your disk space usage policy for DST shadow volume pairs. It is available in Open Enterprise Server (OES) 2015 SP1. The ncpcon quotas command allows you to view and synchronize directory quotas settings and user quotas settings from the primary volume to the secondary volume. The NSS file system independently enforces the quotas set on each volume.