The InstaRAID IR12TB is an innovative internal RAID subsystem supporting two 2.5" hard drive in a 3.5" hard drive physical dimension. Build-in two of the 2.5" hard drive trays and RAID status LED, the unit is selectable from RAID 1 (mirroring) to RAID 0 (striping) with the selectable swtich. With same footprint as regular 3.5" hard drive, with the same screw location, power and data connector, IR12TB supports stripping and mirroring using the hardware RAID enginee, providing an ideal solutions for internal RAID solutions that limited in space.