Please find the below sample documents for your use.
SIEM Architecture Sizing, Storage and Infrastructure Costs Calculator
– Can be used to calculate EPS rates, size a SIEM architecture, and calculate storage and infrastructure costs. Please see the corresponding article SSISS: A SIEM Requirements Gathering Case Study.
– Sample SIEM RACI that contains common SIEM tasks and outlines the various roles and responsibilities of a SIEM environment.