Large EV Vault Store content backup

How do you backup the overal content of EV Vault Store ? I'm currrently on EV 9.0.4R1 and upgrading into EV 10.0.3

I wonder what should I do as the best practice when backing up the EV data which is over 6 TB

My current backup software is HP Data Protector v6.2.1 all it does is write the content of EV VaultStore 1 - 6 and also 6 of indexes drives into tape which take 4 days long.