Updated: November 1, 2008
Applies To: System Center Data Protection Manager 2007
A consistency check is the process by which DPM checks for and corrects inconsistencies between a protected data source and its replica.
The performance of the protected computer, DPM server, and network will be affected while a consistency check is running, but it is expected to be optimized because only the changes and checksums are transferred.
The network impact from a consistency check is significantly lower than initial replica creation after a successful replica creation. If the initial replica creation is interrupted or unsuccessful, the first consistency check can have an impact similar to replica creation.
We recommend that consistency checks be performed during off-peak hours.
DPM automatically performs a consistency check in the following instances:
When you modify a protection group by changing the exclusion list.
When a daily consistency check is scheduled and the replica is inconsistent.