Hi,

One of the reasons given to have a a current, verified and reliable System State Backup was, to restore Active Directory data that becomes 'Corrupted'.

I wasn't sure if I knew what Data Corruption was, and did a Google search, and from what wikipedia says,

"Data corruption refers to errors in computer data that occur during transmission or retrieval, introducing unintended changes to the original data".

Courtesy: http://en.wikipedia.org/wiki/Data_corruption


What could cause AD Data to become corrupted, say when Replication happens? Say, for discussion, somehow data gets corrupted during Replication, doesn't the 'checksum' value would tell the Replication Partner of data corruption?

Or

Can AD Data become corrupted even when there is no Replication? If so, what event[s] could cause such a result?

I can picture Packets being lost in the transmission, but since TCP is used as the Protocol for Replication, isn't there a re-transmission of lost packets.

Thanks