You can slow down the integrity verification to decrease the load on the Windows host and the storage systems by using verification throttling if you are using Microsoft Exchange Server 2003 SP2, or higher, or Microsoft Exchange Server 2007.
SnapManager can throttle integrity verification (the Microsoft Exchange consistency checker utility) in checksum verification mode to reduce the load on the host CPU, and on the storage subsystem. This .dll file checks the databases and transaction log files for integrity verification.