The RR 2744 is the industry's most cost-effective, external 16-channel, 6 Gb/s, SAS/SATA RAID controller. It can directly support up to 16 HDD's and up to 224TB of storage in one or more RAID configurations.
 
RR2744 Key Features
PCIe 2.0 x16 Host Interface
4x SFF-8088 External Mini-SAS Ports
Directly Supports up to 16 HDD and up to 224TB of storage
Supports 0, 1, 5, 10, 50 and JBOD / non-RAID Mode
Supports Windows, macOS, Linux
Comprehensive RAID & Storage Management Interface