Compaq Storage Hub 12 Management Option provides management functionality for the Compaq Storage Hub 12. It shares same physical fibre channel cabling and uses a channel (frequency) not shared by the Fibre Channel protocol, thus no loss in data integrity or bandwidth Out-of-band communication allows master hubs to monitor and control cascaded hubs without depending on general network availability This hub is used with the RA4000, RA8000 and ESA12000 storage solutions and the Enterprise Backup Solution.