I am working to come up with a valid Iometer config file to stress test and compare a NetApp FAS920C storage subsystem against an EMC CX500. We are evaluting the two SANs to determine which one is faster and better for SQL Server. My question is, "How do I determine a fair Iometer config file to run on both systems and what should the workers look like?" I have configured both SANs with two volumes (one for the data file and one for the log file). The volumes have idential spindle counts, drive speeds, etc... I need to come up with workers for the data volume and workers for the log volume. Does anyone have any good suggestions?