ARC-1226-8i internal PCIe 3.0 host RAID controllers are a cost-effective solutions for connecting up to 8 12Gb/s SAS peripheral devices. The 12Gb/s SAS is designed for backward compatibility with 6Gb/s and 3Gb/s SAS/SATA hard drives. The 12Gb/s SAS interface supports both 12Gb/s SAS disk drives for data-intensive applications and 6Gb/s SATA drives for low-cost bulk storage of reference data. The ARC-1226-8i RAID controllers only support directly attach to 8 SAS/SATA drives without supporting the expand function. ARC-1226-8i default support 1GB on-board DDR3-1600 SDRAM memory.