It sounds like you need IPDT enabled on all of the devices.IP Device Tracking (IPDT) Overview - Cisco

A little more information.  The grape backup grow writes the file to (in my case)  /mnt/gfs_block/backups/689835e2-9e1e-11e7-ae20-005056846dbd/backup_2017-09-20_12-09-37.backupYou could create a crontab job that will both create the backup and store ...

This link may give you a starting point.Services for Enterprise Networks​​ - CiscoSpecifically:https://www.cisco.com/c/dam/en/us/solutions/collateral/enterprise-networks/solution-overview-c22-738468.pdf

Are you still having the issue?

I'd test using it stand alone first.