This document is a guide for the IBM Storage Scale System, specifically the third edition updated in March 2026. It outlines the features and specifications of the IBM Storage Scale System, including its architecture, hardware components, and software solutions. The guide details the planning and integration processes necessary for implementing the system, including roles and responsibilities, hardware and software planning, and installation procedures. It also discusses the monitoring and maintenance of the system, ensuring reliability and serviceability. Additionally, the document provides updates on new features and changes from previous editions, such as support for Nvidia BlueField-3 Data Processing Units and enhancements in deployment methods. The guide serves as a comprehensive resource for users and administrators involved in the deployment and management of the IBM Storage Scale System.