Abstract: The multilayered structure of the data storage is considered for the 2D multichannel holographic memory. The influence of the number of layers on the signal to noise ratio at the photodetector is estimated for the different diffraction efficiencies and number of channels. The comparison is made with the 1D case. The use of the random distribution of the initial phases in the channels during the recording is proposed for the diminishing of the intermodulation noises during the reconstruction. It is shown that the 2D holograms are more preferable than the 1D, as they enable greater capacity increase by adding more layers for the same requirements to the readout quality.!1
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