Base capacity decisions on representative workload evidence
Performance Navigator is a capacity-planning and performance-analysis enquiry for supported Power environments. Its value should be evaluated through the decisions it helps the customer make: whether a bottleneck is real, what changes with workload growth and which upgrade assumptions are justified. A snapshot during a quiet period is not enough to represent the estate.
Identify systems, workload cycles and the business events that create peaks. Include planned application changes and the expected growth basis. Separate measured observations from forecasts so a procurement reviewer can see where the recommendation depends on an assumption rather than direct evidence.
Build a reviewable model and validate its limits
Confirm current platform support, data prerequisites and the proposed product or service entitlement. Agree an observation period covering representative activity and known special periods where feasible. Reconcile data quality with the system team before using it for sizing.
The deliverable should explain inputs, constraints and the conditions under which the conclusion remains useful. Compare options with application owners and identify what should be measured after a change. Do not promise a particular improvement merely from a model result. Handover should include the evidence period, forecast assumptions, report definitions and triggers for reassessment. For regional or multi-partition estates, retain clear workload identity so aggregation does not hide a critical local constraint.
Evidence to request for this scope
- Confirm supported systems and the required collection period for the planning question.
- Reconcile observed peaks with known business events and workload owners.
- Document forecast assumptions, option comparisons and the post-change validation method.