IBM 3584-D32 Library Expansion Frame

The IBM 3584 Model D32 expansion frames may be added to the base frame (Model L32) in order to add storage and/or drive capacity. Up to five D32 expansion frames may be added to each base frame. Each 3584 Model D32 frame supports up to 440 storage slots and up to twelve drives, with incremental reduction of storage slots for each set of four drives installed. Each Model D32 frame can have up to 12 logical libraries and 12 control paths.