DS800W is 8-bay storage tower high performance USB 3.0 and eSATA interfaces. The device is backward compatible with USB 2.0, which can be used in the absence of USB 3.0 or eSATA. DS500W has a built-in RAID engine embedded within the enclosure performing all data parity calculation to reduce the CPU utilization from the host and eliminating the needs for a separate controller cards. The built-in RAID supports RAID level 0, 1, 5, 6, 10 and JBOD. It provides redundancy protection against hard drive failures. The new RAID mode N-Way Mirror is used to replicate the saved data throughout all installed hard drives. DS500W features automatic backup, encryption and multi OS friendly – compatible with Windows, Mac OS, and Linux.