General

• Create and use the IAM SMF records. The IAMSMF program can produce the IAMINFO reports from the SMF data and can also create a Comma Separated Values (CSV ) file for easy analysis use with a spreadsheet.

• The IAMSMFVS program provides summary information of IAM data set use and can also help you to identify additional VSAM files that could provide savings upon conversion to IAM.
• Add the IAMINFO DD to batch jobs. This is less important if you are collecting the IAM SMF records, but even so, it can be valuable to have the IAMINFO report statistics and data set information readily available if something happens with the job that may be causing problems.
• Use the messages produced by the IAMINFO reports (either by running IAMSMF with the IAMINFO command or as produced in the IAMINFO DD) to your advantage. They will tell you whether or not more buffers could help improve a data set’s performance (with the IAM368 message), and if a data set needs to be reorganized (with the IAMW21, IAMW22, IAMW91, or IAMW92 message).