DPM and the case of EFS

7:59 am in Uncategorized by mikeresseler

A question that has come to the forums many times… How does DPM handle files that are encrypted with EFS.

Although most of us kind of knew how it worked at the back, it was never a proven statement.  Now, there is finally a KB that explains it quite well.

When you are protecting files that are encrypted, this is what happens:

– If a file has not changed since the last sync, DPM will not transfer any data. 
 
– If a file has changed and is not encrypted with EFS, DPM transfers only the changed blocks of a file.
 
– If a file has changed and the file is protected with EFS, DPM will transfer the entire file.
So now we know it for sure 😉
Make sure that you keep this in mind when planning your PG’s.  This could lead to a significant increase in transferred data so plan well.
Cheers,
Mike