The Dell Compellent SC220 is an expansion enclosure designed for businesses requiring high-density and performance-centric storage solutions. Featuring 24x2.5-inch drive bays, this model allows for significant storage capacity while maintaining a small footprint. It is equipped with two controllers, offering redundancy and high availability for mission-critical applications. The inclusion of two power supply units (PSUs) provides additional reliability, ensuring continuous operation even in the event of a power supply failure. The SC220 supports a variety of drive types, including SSDs for high-performance needs and SAS drives for a balance between cost and speed. Compatible with Dell Compellent's Storage Center OS, it offers advanced storage functionalities such as data tiering, snapshots, and replication, enabling efficient data management and protection. Ideal for businesses with growing data demands, the SC220 offers scalability without compromise on performance or reliability.