Sabio Storage DM4LH Direct Attached Storage, 4 Drive Capacity Hardware RAID Solution (Diskless) Features Four SATA drive bays with support up to 8TB storage capacity; Hardware RAID 0, 1, 1+0, 5, Span, Clone and JBOD Support; with USB2.0, eSATA ports. With built in Hardware RAID controller, the read and write performance using eSATA port approaches 240 MB/Sec Fully compatible with Mac and PC's. Full support for Apple Time Machine and Windows 7 Aluminum housing is designed for heat dissipation, along with vertical drive orientation for clean air flow and two silent fans keep the system and drives cool.