Incremental Backups for Systems With no Agent
This Symantec article covers incrementals of non-agent devices and lack of support for such a feature.
We have a SAN/NAS system with a propietary OS and limited access. The incrementals for this system worked for years on BE2010 and worked correctly the first 2 days after upgrading to BE2012. The incrementals now backup all the data, as opposed to only the data that has changed since the last backup.
I was continously referred to the above article when going through Symantec support. And while I was advised to request this as a new feature here, from the above described experience I believe this is more of a bug than anything--such that when triggered, it views the server/CIFS share as belonging to a system with an agent (or something along those lines). I can't see any reason the date-modified property couldn't be obtained from the file list to compare and skip the file if needed.
Wether this is a bug or a feature that needs to be added, I think many people would benefit from its resolution.