Disclosed is a system, method, and article of manufacture for maintaining
data integrity. A frequency for creating consistent transactions sets is negotiated.
A consistent transactions set creation duration is negotiated. At an interval determined
by the frequency, during the consistent transactions set creation duration, processing
of a first consistent transactions set is completed, while processing of a second
consistent transactions set is delayed until the end of the consistent transactions
set creation duration. After the first consistent transactions set have been offloaded
to secondary storage, consistent copies of data may be created.