Dual media requests were handled sequentially, which caused performance issues
Examples Includes Phase 2 completing with 0 KB
1. pre requiste check RDA to be on minimum version 4.0.3219.1p
a)(https://support.quest.com/download-install-detail/6107853)
b)https://support.quest.com/download-install-detail/6107855
For more upgrade related inquiry refer DR documentation
https://support.quest.com/kb/214046/how-to-upgrade-the-dr-series-system-software-
2. Netvault 12.4 has fixes for the 'Dual Media request' fixed under '12.4.0.16'