A method and apparatus for high performance volatile disk drive (VDD) memory access using an integrated direct memory access (DMA) engine.

The first copy (see Figure 1) is performed by the direct memory access (DMA) engine, which reads file contents from the disk and stores them into a kernel address space buffer.

The ECC controller transmits the data to a direct memory access (DMA) buffer for transfer to the host device, and to an ECC block for error detection and correction of the data.