Content Engine 500 series units are Internet content delivery devices that offer content caching, hosting, and other content-based services. The Content Engine sits on the WAN edge between your small business site, enterprise, or service provider network and the Internet.The Content Engine 560 (CE-560) is a midrange Content Engine that services medium-size enterprise networks. The CE-560 is configured for AC-input power. The default factory configuration comes with one power supply installed. The CE-560 has two internal 18- or 36-GB Ultra2 LVD SCSI hard drives and an external SCSI port for attaching a six-drive Cisco Storage Array. The CE-560 supports up to six 18-GB drives in the Cisco Storage Array.