I just set up a new NAS to backup to. It's mounted on the server via NFS. The server can see it and write to it just fine with one recurring problem. I've fired off a few backups only to the NAS and each time it fails in the same place:
Backup failed : Failed to lock file /path/to/backup/domain.tld.tar.info after 5 minutes
Obviously the domain isn't domain.tld.
I can backup the same domain locally with no problem but not to the NAS. All the other data is written correctly, only the .info file fails.