Can OpenLegacy CDC support BMC AMI Storage IAM (VSAM IAM) files?

Yes—based on the available information, OpenLegacy is expected to support CDC for BMC AMI Storage IAM, also known as VSAM IAM, because IAM is designed to be transparent to applications.

Dataset CDC relies on standard VSAM access patterns rather than application-specific IAM libraries. In the described access path, OpenLegacy uses standard VSAM access through JZOS, the C/C++ runtime, and Supervisor Call (SVC), so no special JCL libraries or link-time IAM libraries are expected to be required.

The main caveat is catalog visibility: VSAM IAM files may appear in the z/OS catalog as regular physical sequential (PS) datasets rather than VSAM entries. That can affect discovery or classification workflows, so the specific dataset metadata and CDC setup should be validated in the customer's environment.

Bottom line: confidence is high that CDC will work as expected, but it should be confirmed with a short proof test before committing to production use. coreiq provides Dataset CDC, and OL Z Gateway can provide optional VSAM CDC hosting where that architecture is used.