Here you can see the Atlas 10K II (left) and a IBM DTLA drive. The SCSI drive has a height of 1.6" whilst IBM's DeskStar model has 1".
This high-end model is the first hard drive I know that comes with a BGA chip.
Looking at the back side you can see the 68-pin connector and the black ribs which are meant to improve the heat dissipation.
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