Access to DDBoost Storage Unit

Hello, we are currently using Quest vRanger software to backup some servers to our Data Domain using DDBoost. Occasionally we are asked to save a backup from a specific date for an extended retention period. I would like to know if there is a way to access the DDBoost Storage Unit to be able to copy a specific backup to a CIFS share or anywhere else. I tried to access it via NFS by mounting the /data/col1/ddboost share and am able to see folders for individual backups, but I am not able to access the folders with a permission error. The permissions being set on the folder are rwx------

Does anyone have any advice here on how I can gain access to the DDBoost folders via NFS (or any other method) to be able to copy some of the data off?