The StorageWorks Enclosure Model 2100 is the packaging for the HSG60 RAID controller. The Model 2100 provides the connection between the HSG60 and disks in StorageWorks Model 4200 drive enclosures. The Model 2100 supports one or two HSG60s. Two cooperating controllers provide redundancy for high availability. Two channel connections on the Model 2100 allow for connection for two single bus drive shelves or 1 dual bus drive shelves.