This unit was used in a corporate environment. I brought it home and used it for a year. It has 4 GB of RAM one power supply seven drive trays with no drives included. The Synology RackStation RS2418RP+ is a 12-bay 2U rackmount NAS Ethernet designed for professional use. With a sleek black and silver design, this network attached storage device is compatible with PC systems and offers high storage capacity for a variety of applications. The lack of drives indicates that the product is designed for use with HDDs, providing reliable and efficient data storage and access. The Synology RackStation RS2418RP+ is a top choice for businesses and organizations looking for a robust and versatile storage solution.