The z/OS cost optimisation reference. The four hour rolling peak, the MLC and IPLA distinction, SCRT reporting integrity, Tailored Fit Pricing decision frame, capping strategies, workload smoothing patterns, and the multi year commercial frame that governs mainframe spend.
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The Monthly License Charge and International Program License Agreement distinction. Which products sit on which model. The implications for sub capacity reporting and renewal.
The four hour rolling peak MSU metric. How it is calculated, what drives it, and the operational levers that move it. The relationship to the monthly charge.
The Sub Capacity Reporting Tool. Configuration, data quality, submission cadence, and the typical reporting failures that cost money. The IBM audit position on SCRT data.
Defined capacity LPAR, Group Capacity Limit, soft capping, hard capping, workload smoothing patterns. The cost benefit of each lever, the operational tradeoffs.
The Tailored Fit Pricing offering. The Enterprise Consumption Solution, the Software Consumption Solution, the Application Consumption Solution. When TFP is the right move and when it is not.
IPLA sub capacity coverage on z/OS. ILMT for IPLA products on the mainframe, the bundle file mapping, the Audit Snapshot generation for z/OS IPLA workloads.
The mainframe ELA. The structure, the typical scope, the discount levers, the multi year commitment, the price protection, the trade up rights.
The buyer side close position on z/OS cost optimisation. The operational disciplines, the contractual asks, the multi year frame, and the integration to the broader IBM relationship.
This guide connects to Mainframe, Database, Middleware, License Consulting, and the broader services portfolio. The work is most powerful when paired with the underlying operational evidence and the renewal cycle timing. See the related papers below and the insights blog for ongoing commentary.