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 RAID5 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 Field Upgradeable, replaceable HDD array Large Storage Capacities (up to 4TB) Designed for Internal RAID 5 Removable HDD bays for quick, easy maintenance Complete PAN / TILT / ZOOM Control Simultaneous Search, Playback and Backup Continuous, Motion and Alarm Recording Modes Video Signal Loss Detection Up to 16 Channels of Audio Multiple Levels of Security Access Looping Outputs Advanced POS and ATM Support Output the video to an NTSC/PAL Display Digital Signature Support for Tamperproof Exporting Pre-Alarm Image Recording Available Models 250GB, EVR32-240-250 500GB, EVR32-240-500 750GB, EVR32-240-750 1000GB, EVR32-240-1000 1250GB, EVR32-240-1250 1500GB, EVR32-240-1500 1750GB, EVR32-240-1750 2000GB, EVR32-240-2000 2500GB, EVR32-240-2500 3000GB, EVR32-240-3000 3500GB, EVR32-240-3500 4000GB, EVR32-240-4000