nbu 7.6 exchange 2013 recovered database corruption

Hi, I'm using netbackup 7.6 on windows 2008R2 and attempting a redirected restore of a Exch 2013 mailbox database to a recovery database.

To complicate things the backup policy is of type vmware for exchange database, and there are two servers in my DAG.

The restore is failing with

MS Exchange Server Policy error [2810]

If I look at the event viewer for the exchange server,  it states something along the lines the recovery database fails to be mounted because of a corruption.

It appears the database was in a shutdown dirty state when backed up.

Is there anyway I can attempt a manual recovery of the datbase or determine why the database is said to be corrupted?