I am not sure how you want to do this, but i am gonna give a high level overview of how i have things set up. The remote site config is the same for all remote sites backing up to disk.
Remote Site - I backup up the remote site to itself. The server onsite is multi-purpose.
Roles installed on this single server are:
Hyper-v Host - hosts 3 VM's, only 1 is backed up using VSA
CV Media Agent - has the media agent installed on the physical box.
Backup Target - Physical box has a pile of disk. A raid-6 array for the disk library
Dedupe DDB = A Raid 1 array that hosts the Global Dedupe Database for that site.
So in commvault, i have a Global Dedupe Database set up for the site. the backup strategy is Daily incrementals and weekly synthetic fulls. THis is true for all remote sites that backup to local disk at the site.
Data center site - I have a large server with a pile of backend SAN storage for Disk library target. Global Dedupe Database is hosted on SSD drives. This Media Agent is the target for all Auxilliary copies from out in the field
Now when it came to setting up the auxiliary copy of the remote site backups to copy to the Datacenter, i followed the document from commvault on seeding a deduplicated storage policy.
So basically i took a USB drive, shipped it to the remote site, had it plugged in, created the secondary USB copy and did the copy. Shipped it back, plugged it into the Datacenter media agent, run the tertiary copy. then did the aux copy from remote site back to datacenter. I half wonder if i did this process properly.
So one thing you mentioned you were confused on was the synfulls happen on the MA not at the source. I am not sure what you mean.
The synfulls do happen at the remote site, as do the incrementals. All i am trying to do is get those incrementals and synfulls copied back to here as an aux/secondary copy. The backup has already happened at the remote site. THe purpose of making a copy of those primary backups is in case the remote site server blows up, we have a copy of the backed up data in the datacenter.
I can supply more information, but let me know how you want to take a look at things, i can take screen shots and what not of what i am seeing