QNAP TL-R1220Sep-RP SAS 12Gb/s storage expansion enclosure is designed for expanding the storage space of your QTS or QuTS hero NAS. Up to sixteen expansion enclosures can be daisy-chained via high-speed mini SAS HD cables to support up to 3.4PB raw capacity ideal for archiving/backing up virtualization applications surveillance recordings large data or multimedia. Featuring Broadcom SAS DataBolt bandwidth optimization technology the TL-R1220Sep-RP consolidates 6Gb/s infrastructure into 12Gb/s. With four mini SAS HD SFF-8644 Wide Ports the TL-R1220Sep-RP delivers up to 192Gbps transfer speed when connected to a single host. When connected to a QTS/QuTS hero NAS that supports multipath routing the TL-R1220Sep-RP can achieve smoother data transmission and continuous system operation.