This document provides an overview of IBM's entry-level and mid-range disk storage solutions, including the DS3000 series (DS3200, DS3300, DS3400, DS3500) and EXP3000 expansion enclosures. It describes the key features and positioning of each product, such as interface options, drive capacities, and management software. The goal is to help sales personnel identify the appropriate IBM storage products for different client environments and workloads.