The DNS-345 ShareCenter Quattro is a 4-bay network storage device that enables you to share documents, music, photos, and videos across the network and over the Internet. This device allows you to create a central network point for backing up valuable data onto internal SATA drives. The ShareCenter Quattro supports RAID 1/5/5+Hot Spare/10 to protect your data from drive failures. You can use this device to stream digital media to UPnP AV compatible network media players.4 In addition, the storage device's USB port supports Printer Server functionality, UPS monitoring, and USB data transfers. The device's aluminum chassis with built-in Smart Fans help keep it cool, reducing the risk of overheating.