SAS 2.0 is designed for much higher speed data transfer than previous available and backward compatibility with SAS 1.0. The 6Gb/s SAS interface supports both 6Gb/s and 3Gb/s SAS/SATA disk drives for data-intensive applications and 6Gb/s or 3Gb/s SATA drives for low-cost bulk storage of reference data. The ARC-12x5 family only support directly attach to 4/8 SAS/SATA drives without supporting the expand function.
Note:
Model Name:ARC-1225-8i
I/O Processor :Dual Core RAID-on-Chip 800MHz
On-Board Cache :1GB on-board DDR3-1333 SDRAM with ECC
Driver Connector:2 x SFF-8087
Management Port:In-Band: PCIe / Out-of-Band: BIOS, LCD (Optional) and LAN Port
Enclosure Ready:Individual Activity/Faulty Header, Serial Bus and SGPIO
Form Factor (LxH):Low Profile: 169.5 x 64.4 mm