The IBM 1818-7372 feature enables IBM DS5000 series storage systems to attach up to eight EXP5060 expansion units, dramatically increasing the storage system's capacity and scalability. Each EXP5060 unit can house up to 60 drives, allowing for a substantial expansion of the storage infrastructure. This capability is particularly beneficial for organizations with rapidly growing data storage requirements, providing a scalable solution that can accommodate large amounts of data without necessitating a complete system overhaul. The attachment of multiple EXP5060 units to a DS5000 series system supports a diversified storage architecture, enabling the integration of different drive types to meet varying performance and capacity needs. This feature ensures that businesses can maintain high levels of data accessibility and integrity while efficiently managing storage costs. By leveraging the DS5000 series' ability to connect to multiple EXP5060 units, organizations can achieve a highly flexible and scalable storage environment, capable of supporting extensive data growth and diverse workload requirements.