This means that a RAID built with one hardware RAID controller can not be rebuilt by another RAID controller of a different manufacturer . However , this allows RAID disks to be moved from one computer to a computer with an operating system or file system of the same type , which can be more difficult when using hardware RAID ( e.g. # 1 : When one computer uses a hardware RAID controller from one manufacturer and another computer uses a controller from a different manufacturer , drives typically can not be interchanged .