I have a TimeMachine backup to a local NFS (1Tb partition) on a WdMyBookEX2. The backup works fine when I'm connected locally over ethernet/wifi (takes a while to backup about a TB).
When I'm away from home, I have setup DDNS, port-forwarding for AFP, etc. So I can connect to my WDMyBookEX2 remotely over AFP and run the backups normally.
I typically add it as a '2nd Volume' in the prompt from the TimeMachine wizard.
However, I've discovered that typically after the verification of the backup is done, the wizard reports that it has "become inconsistent", and that TimeMachine suggests I start a 'new backup' in order to ensure consistency. (Don't have message in front of me right now)
Is there anyway to avoid this? I would prefer to continue running backups while I'm away from home, even remotely.