The QXP-3X4PES PCIe card is designed for expanding the capacity of a QuTS hero or QTS NAS by connecting it to QNAP TL PCIe Interface JBOD. Multiple JBODs can be daisy-chained via high-speed cables to scale up to petabyte-level storage to handle exponential data growth caused by archiving/backing up surveillance recordings, RAW multimedia files, big data, and virtualization applications.