This document provides guidance on sizing and configuring Spectrum Scale and Elastic Storage Server solutions. It discusses collecting information from clients such as use cases, workload characteristics, capacity and performance goals, and infrastructure requirements. It then describes using tools to help architect solutions that meet the client's needs, such as breaking the problem down, addressing redundancy and high availability, and accounting for different sites, tiers, clients and protocols. The document also provides tips for working with the configuration tool and pricing the solution appropriately.