The RR 2782 is is the industry's most cost-effective mass-storage RAID controller.
 
RR2782 Key Features
PCIe 2.0 x16 Host Interface
6x SFF-8087 Internal Mini-SAS Ports / 2x SFF 8088 External Mini-SAS Ports
Directly Supports up to 32 HDD and up to 448TB of storage
Supports 0, 1, 5, 10, 50 and JBOD / non-RAID Mode
Supports OCE (online capacity expansion) and ORLM (Online RAID Level Migration)
Supports Windows, macOS, Linux and FreeBSD platforms
Comprehensive RAID & Storage Management Interface