The IBM 9406-7133 DASD Concurrent Maint Cage is an integral storage component designed to enhance the maintenance and serviceability of Direct Access Storage Devices (DASD) within IBM server systems. This innovative cage enables the concurrent maintenance of DASD units, allowing for the replacement, upgrade, or servicing of storage devices without the need to shut down the entire system. This feature is crucial for maintaining high availability and reducing downtime in critical server environments, where continuous operation is essential. The DASD Concurrent Maint Cage is built to support multiple DASD units, providing a scalable and flexible storage solution. Its design focuses on ease of access and efficient serviceability, ensuring minimal disruption to system operations. This makes it an invaluable asset for data centers and enterprises that prioritize data availability and require robust storage solutions to support their business operations.