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Solid State Drives (SSD) compete with Hard Disk Drives (HDD) in the data storage market. Recent advances in SSD capacity/cost have come from arranging the flash memory cells not just on the 2D surface but from also stacking many cells vertically through the 3rd dimension. The same option has not been seen as a practical approach for HDD technology that is based on magnetic recording. Data can only be written to and read from just above the surface of the medium, and any data on additional layers deeper in the medium is profoundly affected by the additional spacing and loss of resolution. Nevertheless, modest gains may be still be possible. Earlier work suggested gains around 17% for two stacked layers. That work only examined a single isolated track on each of two layers and just one reader. In this new work, we examine a minimal 3D configuration again comprising two layers, where two adjacent tracks on the upper layer straddle a double width track on the lower layer. We take the writing process as a given—for instance utilizing Microwave Assisted Magnetic Recording. For readback, we variously assume 1, 2, or 3 readers arrayed above the data tracks.