
602 DS8800 Performance Monitoring and Tuning
throughput. Multiple LUNs in the initial establish quickly saturate the links, which is
referred to as the
aggregate copy rate and depends primarily on the number of links, or
bandwidth between sites. It is important to understand this copy rate to have a realistic
expectation about how long the initial establish takes to complete.
Use Global Copy during the initial copy or for resynchronization to minimize the impact of
performing both synchronous replication and the bulk copy at the same time.
Production I/O is given priority over DS8000 replication I/O activity. High production I/O
activity negatively ...