The Cisco 7325 Content Engine (part number CE-7325-K9)comes with a default configuration consisting of a 6x internal SCSI hard disks. No additional internal hard disks can be added to the product. For storage expandability and higher caching performance a Cisco Storage Array 14 can be connected to the Cisco 7325 Content Engine SCSI connector. Optionally the Cisco 7325 Content Engine can be configured with a Fibre Channel adapter for interfacing with SANs.