Reinstalling A Dummy Disk Drive Module - IBM 2104 Model DS4 Installation Manual

7. Ensure that the 2104 Model DS4 has no empty slots. Install dummy disk drive
modules if necessary. See Figure 30.
SC000927
Figure 30. Reinstalling a dummy disk drive module
8. Go to "Installing the switch cover plate" on page 17.
16
Expandable Storage Plus 2104 Model DS4 Installation Guide