Moving large files to Owncloud on QNAP NAS

I am trying to wrap my head around migrating from a Drobo to Owncloud.

I currently have about 12TB of data on an older drobo that I am transferring to my new QNAP NAS.

I have Owncloud installed on the QNAP through container station and then the Drobo connected via USB 3 to the NAS and I can see it in the QNAP file explorer.

Can I manually copy the files from the QNAP file explore from drobo to the owncloud/files directly and then force owncloud to scan and index the files?


Do you I need to connect the Drobo to a client computer, copy the files locally and then have the Owncloud client slowing index the files back to the NAS?