The Toshiba Surveillix EVR Series sets the standard in fault tolerant, high definition recording. With its fault-tolerant design consisting of enhanced airflow design for maximum heat dissipation, available Internal RAID 5 HDD capabilities and redundant power supplies, the EVR Series is designed for maximum uptime. In the event a problem does occur, its field-replaceable hard drives and power supplies allow these failed components to be replaced without ever having to remove it from the customer site. The EVR series can be configured to allow HDD storage expansion in the field without it needing to be returned to Toshiba for upgrading. Each system includes built-in a RS-422 adapter supporting over 50 protocols as well as a CD-RW with available DVD Multi Burner.